Water & Wastewater Treatment Plant Piping, Valves & Chemical Feed Solu

Clean Water Starts with Systems That Never Fail.

Water and wastewater treatment facilities operate under continuous regulatory scrutiny, around-the-clock chemical treatment demands, and zero tolerance for system failures that affect public health or permit compliance. Alsco Industrial supplies the corrosion-resistant thermoplastic valves, sodium hypochlorite-compatible piping, chemical metering systems, water quality instrumentation, actuated flow control, and structural support hardware that water and wastewater treatment engineers and plant operators depend on to keep every treatment system performing and every discharge in compliance.

ONE SOURCE. TOTAL CONFIDENCE.

Alsco Industrial has supplied corrosion-resistant flow control and fluid handling products to water and wastewater treatment facilities across North America since 1983. We stock the brands and materials that treatment plant engineers and operators specify, Asahi thermoplastic valves across PVC, CPVC, polypropylene, and PVDF, GF Signet water quality and flow instrumentation, Lutz chemical metering pumps, Hayward flow control and filtration, Bonomi actuated valve packages, Spears Schedule 80 fittings, and fiberglass structural support systems, all from a single source with same-day fulfillment on in-stock orders.

DISINFECTION CHEMICAL FEED SYSTEMS
Sodium Hypochlorite Compatible Systems Built for the Demands of Water Treatment

Sodium hypochlorite is the primary disinfectant in municipal and industrial water and wastewater treatment, and it is one of the most corrosive and chemically aggressive fluids that any piping system handles. The components that store, transfer, and inject sodium hypochlorite must be selected for bleach compatibility at every point in the feed path. A single incorrect material choice, a valve body, a fitting, a check valve seat, or a section of tubing, introduces a corrosion failure mode into the most critical chemical system in the plant.

Corrosion Destroying Metal Valves and Fittings in Sodium Hypochlorite Feed Systems

The pain: Metal valves and fittings, brass, bronze, and even 316 stainless steel, corrode rapidly in sodium hypochlorite service. Bleach oxidizes metal surfaces, attacks valve internals, and produces corrosion byproducts that contaminate the disinfection chemistry and clog injection points. A sodium hypochlorite feed system built with incorrect metal components enters a predictable corrosion failure cycle that demands continuous maintenance attention on the most critical treatment system in the plant.
The Alsco Advantage: Asahi thermoplastic ball valves in PVC and CPVC with EPDM seats are the correct specification for sodium hypochlorite contact service in water treatment applications, providing complete corrosion immunity to bleach chemistry at the concentrations used in municipal and industrial disinfection programs. Vented ball designs allow the safe release of chlorine gas pressure that builds inside ball valves in hypochlorite service, preventing the pressure buildup that creates safety risk in sealed valve bodies. True-union designs allow in-line valve replacement without cutting pipe, keeping maintenance on critical disinfection systems fast and contained.
Relevant Products: PVC True-Union Vented Ball Valves • CPVC True Union Vented Ball Valves • Check Valves • Chemical-Resistant Tubing

Imprecise Sodium Hypochlorite Dosing Creating Disinfection Gaps or Compliance Risk

The pain: Municipal and industrial water treatment disinfection programs operate within a narrow free chlorine residual target range, sufficient to achieve regulatory disinfection requirements without generating disinfection byproduct formation that creates its own compliance risk. Imprecise dosing from manual chemical addition or poorly calibrated metering equipment produces the variability that creates both under dosing events that compromise public health protection and overdosing events that generate THM and HAA5 formation potential above regulatory limits.
The Alsco Advantage: Blue-White peristaltic chemical metering pumps deliver precise, repeatable sodium hypochlorite feed at calibrated rates, eliminating the batch variability of manual addition with a continuous, verifiable chemical delivery system. Peristaltic designs are specifically well-suited to sodium hypochlorite service because they have no internal check valves for off-gassing bleach chemistry to vapor lock, the pump tube is the only component contacting the chemical, and tube replacement is the only routine maintenance task. Available in flow ranges matched from small water districts to large municipal treatment capacity, they provide the dosing precision that public water system disinfection programs require.
Relevant Products: Diaphragm Dosing Pumps • Non-Metallic Diaphragm Pumps • Metallic Diaphragm Pumps • Diaphragm Pump Accessories • Chemical Tubing • Check Valves

No Continuous Chlorine Residual Verification on Treated Water Discharge

The pain: A disinfection system that appears to be operating normally, pump running, chemical in the storage tank, can be delivering inadequate chlorine residual due to a vapor locked pump, a fouled injection point, or depleted chemical inventory. Without continuous chlorine residual monitoring at the point of discharge, the first indication of a disinfection gap is a compliance reporting event, not an operational alarm that allows real-time correction.
The Alsco Advantage: GF Signet's integrated chlorine analyzer panel systems provide continuous, inline free chlorine measurement with a built-in flow regulator that maintains constant sample flow, delivering reliable, reagent-free residual readings that integrate with plant SCADA and control systems to trigger automated dosing responses and generate the continuous compliance documentation that state drinking water and wastewater discharge programs require.
Relevant Products: Chlorine Analyzer Systems • Flow Sensors • pH/ORP Sensors • Sensor Electronics • Transmitters

pH, FLOW & WATER QUALITY INSTRUMENTATION
Continuous Measurement Across Every Critical Treatment Parameter

Water and wastewater treatment facilities live and die by measurement accuracy. pH, dissolved oxygen, conductivity, flow rate, and chlorine residual aren't periodic data points, they're continuous process variables that determine treatment effectiveness, regulatory compliance status, and public health protection in real time. Instrumentation that drifts, fouls, or fails silently is not just a maintenance problem, it's a compliance and public safety risk that treatment plant operators can't afford.

pH Drift in Treatment Processes Going Undetected Between Manual Tests

The pain: pH is a critical control parameter at multiple points in both water and wastewater treatment coagulation and flocculation efficiency in water treatment depends on precise pH control, biological treatment in wastewater is pH-sensitive, and virtually every NPDES discharge permit includes pH limits. Manual testing between operator rounds leaves pH blind spots that allow process upsets to develop undetected, and in a wastewater discharge application, an undetected pH excursion at the discharge point is a permit violation that generates regulatory consequences that manual testing cannot prevent retroactively.
The Alsco Advantage: GF Signet pH electrodes with DryLoc connectors installed inline at critical treatment process points and discharge monitoring locations provide continuous pH measurement with automatic electrode health diagnosticsdetecting drift and excursions as they develop, triggering automated treatment responses, and generating the continuous data record that NPDES permit compliance documentation requires. Memory chip-enabled electrode health monitoring flags fouling or calibration drift before it produces inaccurate readings, maintaining the integrity of the most compliance-critical measurement point in the plant.
Relevant Products: pH/ORP Sensors • Transmitters • Sensor Installation Fittings • Sensor Electronics

No Continuous Flow Verification on Chemical Feed and Treatment Process Lines

The pain: A chemical feed pump that appears to be running but delivering at reduced rate, due to vapor lock, worn check valves, or a partially blocked injection point doesn't announce its failure. Flow deficits in coagulant, disinfectant, or pH adjustment feed lines allow treatment process deviations to develop before any visible symptom appears. Without continuous flow verification on chemical feed lines, operators are managing treatment chemistry by assumption rather than by measurement.
The Alsco Advantage: GF Signet paddlewheel flow sensors and Blue-White variable-area flow meters installed on chemical feed lines provide continuous, verified delivery confirmationgiving plant operators documented proof that each chemical is reaching its injection point at the specified rate. With plastic sensor bodies compatible with the corrosive chemistry of water treatment chemical feed lines, they add measurement without adding a corrosion failure mode to the lines they monitor. Output signals integrate directly with plant PLCs and SCADA systems for automated dosing control and compliance data logging.
Relevant Products: Flow Sensors • Flow Meters • Electrodes • Installation Tees & Fittings

Conductivity and Dissolved Oxygen Excursions Compromising Treatment Process Performance

The pain: Dissolved oxygen is critical to biological treatment in activated sludge and aerobic digestion processes,DO drops below target suppress nitrification and cause treatment process upsets that take days to recover. Conductivity monitoring in water treatment processes provides early warning of breakthrough events and membrane fouling in demineralization and reverse osmosis systems. Without continuous inline measurement, these parameters are managed reactively rather than proactively.
The Alsco Advantage: GF Signet optical dissolved oxygen sensors, factory pre-calibrated with no electrolyte changes required, and conductivity sensors provide continuous inline monitoring of both parameters, with standard 4-20mA outputs for SCADA and PLC integration. The complete GF Signet multi-parameter monitoring suite allows treatment plant operators to monitor pH, ORP, DO, conductivity, flow, and chlorine residual from a single instrumentation platform, reducing the number of sensor systems to maintain while expanding measurement coverage across the treatment process.
Relevant Products: Flow Sensors • Flow Meters • Sensor Electronics • Installation Tees & Fittings • Sensor Accessories

Upgrading a Chemical Feed System or Adding Instrumentation to an Existing Treatment Plant?

Material selection in sodium hypochlorite and treatment chemical service is not generic, the wrong valve body, wrong seat elastomer, or wrong fitting material introduces a failure mode into the most critical systems in a water or wastewater treatment facility. Our team has been specifying corrosion-resistant flow control and chemical handling systems for water treatment applications since 1983.

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TREATMENT PLANT PIPING & VALVE SYSTEMS
Corrosion-Immune Infrastructure for the Full Treatment Process

Water and wastewater treatment plants handle a broader range of corrosive chemistry than almost any other type of facility, sodium hypochlorite, hydrofluosilicic acid, aluminum sulfate, ferric chloride, polymer solutions, caustic soda, and sulfuric acid, through piping and valve systems that must remain leak-free for decades of continuous service. The material selections made at design and installation determine how much of the plant's maintenance budget goes to piping and valve repairs over the operating life of the facility.

Metal Utility Piping Corroding in the Corrosive Chemical Atmosphere of Treatment Facilities

The pain: Water and wastewater treatment plants are chemically aggressive environments not just at the pipe interior but at the pipe exterior, chlorine off-gassing from hypochlorite storage and feed areas, ammonia in biological treatment zones, and the generally humid, chemically active atmosphere of a treatment plant corrode metal utility piping and support hardware from the outside in simultaneously with chemical attack from the inside out.
The Alsco Advantage: PVC and CPVC thermoplastic piping systems are immune to both internal and external chemical attack in the treatment plant environment, no internal galvanic corrosion from process chemistry, no external surface oxidation from chlorine and chemical fumes in the plant atmosphere. Spears Schedule 40 and 80 PVC and CPVC fittings in the full configuration range from 1/8" to 14" provide the complete fitting inventory to specify an entire chemical feed, utility water, and process piping system without mixing materials or compromising dimensional consistency.
Relevant Products: PVC Schedule 40 Pipe • PVC Schedule 80 Pipe • CPVC Schedule 80 Pipe • PVC Schedule 40 Fittings • PVC Schedule 80 Fittings • CPVC Schedule 80 Fittings • PVDF Schedule 80 Fittings • Cements, Primer & Applicators

Valve Failures in Active Treatment Loops Requiring System Shutdown for Repair

The pain: A failed isolation valve on an active chemical feed line, a filter influent header, or a process piping loop in a treatment plant is a maintenance event that can't always wait for a scheduled shutdown window. Replacing a conventional socket-end valve requires cutting the pipe on both sides, waiting for solvent weld cure time, and returning the line to service,a sequence that extends the maintenance interval and may require process flow diversion while the repair is made.
The Alsco Advantage: True-union thermoplastic ball and butterfly valves from Asahi and Hayward allow in-line valve removal without cutting pipe, the union nuts unscrew, the valve body is removed, and the replacement is seated in minutes. For water and wastewater treatment facilities where process continuity is a regulatory commitment as well as an operational one, true-union valve design throughout chemical feed, process, and utility piping is the maintenance standard that keeps repairs from becoming process interruptions.
Relevant Products: Ball Valves • Butterfly Valves • Check Valves • Diaphragm Valves

Manual Valve Operation on Chemical Feed Lines Exposing Operators to Treatment Chemistry

The pain: Treatment plant operators who must manually operate valves on sodium hypochlorite, hydrofluosilicic acid, ferric chloride, and other treatment chemical lines face repeated exposure to hazardous chemistry during routine isolation, flow adjustment, and system switching operations. In emergency scenarios where multiple chemical feed lines must be isolated quickly, the time required for manual valve operation on each line is a safety concern that automated systems eliminate.
The Alsco Advantage: Bonomi electric and pneumatic actuated valve packages and Asahi Smart Pack actuated thermoplastic valves allow remote operation of chemical feed isolation and control valves from control room panels or PLCs, keeping operators away from chemical feed lines during routine operation and providing the rapid, reliable isolation response that emergency shutdown requirements demand in treatment plant chemical areas. Spring-return pneumatic actuators provide fail-safe closure on power or air loss, defaulting to a safe state when utility systems fail.
Relevant Products: Actuated Ball Valves • Actuated Butterfly Valves • Actuated Diaphragm Valves • Solenoid Valves

PIPE SUPPORT & STRUCTURAL SYSTEMS
Support Infrastructure That Matches the Service Life of the Piping It Holds

The pipe support systems and structural hardware in a water or wastewater treatment plant operate in the same chemically aggressive, high-humidity environment as the piping they support. Steel strut and clamps that corrode in that environment create safety concerns, generate audit findings, and require replacement before the piping system they support needs any attention. Specifying the correct support material at installation is far more cost-effective than a corrosion-driven replacement program years into the facility's operating life.

Steel Strut and Pipe Clamps Corroding in Treatment Plant Chemical and Humidity Environments

The pain: Galvanized and painted steel strut channel and pipe clamps in water and wastewater treatment plant chemical feed areas, chlorination rooms, and outdoor process areas corrode under the combined effects of chemical atmosphere exposure, condensation from temperature swings, and the generally high-humidity conditions of treatment plant environments. Corroded support hardware generates inspection findings, loses the structural integrity it's there to provide, and creates re-work costs in locations that may require chemical isolation or confined space procedures to access safely.
The Alsco Advantage: Fiberglass reinforced plastic strut channel and fiberglass pipe clamps provide structural pipe support that is completely immune to the chemical atmosphere, moisture, and corrosive conditions of water and wastewater treatment plant environments. No rust, no coating failure, no structural degradation from chlorine off-gassing, humidity, or chemical splash, in the environments that destroy steel support hardware within a few years of installation, fiberglass strut delivers the full service life of the piping system it supports without a corrosion maintenance program of its own. Steel strut in appropriate finish is available for dry, indoor utility areas where the corrosion environment doesn't justify the fiberglass specification.
Relevant Products: Fiberglass Strut Channel • Fiberglass Pipe Clamps • Fiberglass Strut Fittings • Steel Strut Channel • Galvanized Pipe Clamps • Cushion Clamps • Two-Hole Pipe Clamps • Beam Clamps

CHEMICAL STORAGE & TRANSFER
Safe, Contained Chemical Handling From Bulk Storage to Injection Point

Water and wastewater treatment facilities handle large volumes of hazardous treatment chemicals, sodium hypochlorite, hydrofluosilicic acid (fluoride), aluminum sulfate, ferric chloride, caustic soda, and sulfuric acid,on a continuous basis. Moving those chemicals from bulk storage to day tanks and injection points safely, without spills and with proper chemical compatibility throughout the transfer path, is a daily operational requirement that the right equipment handles without incident.

Treatment Chemical Transfers Creating Spill and Exposure Risk in Chemical Storage Areas

The pain: Manual transfer of sodium hypochlorite, fluoride, coagulants, and other treatment chemicals from bulk containers, lifting, tilting, manual pumping with incompatible equipment, creates spill risk, operator chemical exposure, and secondary containment events in areas where chemical releases have both safety and regulatory consequences. A treatment chemical spill in a municipal water plant chemical storage area is an OSHA incident, a secondary containment activation, and a public works liability event simultaneously.
The Alsco Advantage: Polypropylene drum pumps with chemical-compatible tubing and cam and groove couplings allow controlled, contained treatment chemical transfer without manual lifting or pouring. Polypropylene and PVDF cam and groove couplings provide secure, spill-controlled connections between bulk chemical containers and day tanks, in materials verified for compatibility with the full range of water treatment chemicals. The complete transfer path in chemical-compatible materials eliminates spill risk at connection and disconnection points where manual transfer methods create it.
Relevant Products: Drum Pump Kits • Drum Pump Tubes • Drum Pump Accessories • PP Cam & Groove Couplings • PVDF Cam & Groove Couplings • Chemical-Resistant Tubing • Check Valves

Level Monitoring on Chemical Day Tanks and Bulk Storage Creating Manual Inventory Burden

The pain: Treatment chemical inventory management that relies on manual tank level checks, operators visually reading sight glasses or manually dipping tanks, creates gaps between readings during which day tanks can run dry and interrupt chemical feed, or overflow during delivery and create secondary containment events. In a 24-hour treatment facility, manual level management is a labor commitment that continuous instrumentation eliminates.
The Alsco Advantage: GF Signet level sensors installed on chemical day tanks and bulk storage vessels provide continuous, remote-readable level data that integrates with plant SCADA and control systems, automating transfer pump control, triggering low-level chemical feed alarms, and generating the inventory tracking data that supports chemical procurement planning and regulatory chemical usage reporting. Available in configurations compatible with the chemically aggressive storage contents of water treatment chemical tanks, they add continuous level visibility without adding manual monitoring labor.
Relevant Products: Level Sensors • Sight Glasses • Transmitters

WHO WE SERVE
The Water and Wastewater Treatment Facilities We Support

From small water districts to large regional treatment authorities, if it treats water, we supply the components that keep it operating.

Municipal Water Treatment Plants: Potable water treatment facilities producing safe drinking water for public distribution, with sodium hypochlorite disinfection systems, coagulant and fluoride chemical feed infrastructure, pH adjustment systems, flow measurement, and the water quality instrumentation that supports continuous Safe Drinking Water Act compliance.
Municipal Wastewater Treatment Plants: Publicly owned treatment works handling biological and chemical treatment of municipal wastewater, with sodium hypochlorite disinfection, polymer and coagulant feed systems, pH monitoring and neutralization, effluent flow measurement, and the continuous compliance monitoring that NPDES permits require.
Industrial Water Treatment Facilities: On-site industrial water treatment systems for manufacturers, power generators, and process facilities, handling cooling water chemistry, boiler feed water conditioning, process water treatment, and wastewater pretreatment before discharge to municipal systems.
Water & Wastewater System Contractors: Mechanical contractors, specialty treatment system contractors, and EPC firms designing, building, and upgrading water and wastewater treatment infrastructure, who need a knowledgeable single-source supplier for corrosion-resistant piping, valves, chemical metering systems, and instrumentation.
Rural Water Districts & Small Utilities: Small and rural water systems operating under the same Safe Drinking Water Act requirements as large utilities, with the same need for reliable sodium hypochlorite feed systems, accurate flow measurement, and corrosion-resistant piping, often managed by operators who benefit from straightforward, well-supported components that don't demand extensive technical maintenance.
Private & Industrial Wastewater Treatment Operators: Third-party contract operators and industrial facility environmental teams managing on-site wastewater treatment systems, industrial pretreatment programs, and long-term discharge compliance obligations, where component reliability and supplier responsiveness directly affect permit standing.

Water & Wastewater Treatment FAQs

Q: Why are vented ball valves required in sodium hypochlorite piping systems?
A: Sodium hypochlorite releases chlorine gas as it degrades, particularly at elevated temperatures and when in contact with certain materials. In a standard ball valve, gas pressure can build up inside the ball cavity when the valve is closed, creating pressure that may force the valve body to leak or, in a worst case, rupture. Vented ball valves incorporate a small vent hole in the ball that allows pressure equalization between the ball cavity and the pipeline, preventing pressure buildup and the associated safety and leak risk. In municipal water and wastewater treatment applications, vented ball valves are the specified standard for sodium hypochlorite contact service,and Asahi's PVC and CPVC vented true-union ball valves are among the most widely used configurations in water treatment facilities across North America.

Q: What thermoplastic materials are compatible with sodium hypochlorite in water treatment piping systems?
A: PVC and CPVC are the primary thermoplastic materials used for sodium hypochlorite contact piping in water and wastewater treatment. PVC is appropriate for standard concentration hypochlorite service at ambient temperatures, the typical 12.5% sodium hypochlorite used in municipal water treatment. CPVC extends the service range for higher temperatures and higher concentration services. Polypropylene is also compatible with sodium hypochlorite and is used in applications where its specific chemical resistance or temperature range advantages are relevant. PVDF provides the broadest chemical resistance and is specified for the most demanding oxidizing chemical services. The elastomer selection for valve seats and seals is equally important,EPDM is generally compatible with sodium hypochlorite, while FKM (Viton) is specified for higher concentration or temperature applications. Our team can verify the correct material specification for your specific hypochlorite concentration and service conditions.

Q: What GF Signet instrumentation is recommended for a complete water treatment plant monitoring system?
A: For a comprehensive water treatment plant monitoring suite, GF Signet provides sensors for all critical parameters, pH electrodes with DryLoc connectors for continuous pH monitoring at coagulation, neutralization, and discharge points; paddlewheel and ultrasonic flow sensors for chemical feed verification and process flow measurement; optical dissolved oxygen sensors for biological treatment process monitoring; conductivity sensors for demineralization and process water quality monitoring; and integrated chlorine analyzer systems for disinfection residual verification. All sensors output industry-standard 4-20mA and pulse signals compatible with plant PLCs and SCADA systems, and the 9900 and 9950 dual-channel transmitter platform allows multi-parameter monitoring from a single electronics package, reducing the number of transmitters and wiring runs in the instrument loop.

Q: Why specify fiberglass strut and pipe clamps in a water or wastewater treatment plant?
A: Water and wastewater treatment plants are among the most corrosive environments for structural support hardware, chlorine off-gassing from hypochlorite storage and feed areas attacks steel, high humidity accelerates oxidation throughout the facility, and chemical splash in chemical feed areas creates direct corrosion attack on exposed metal surfaces. Galvanized and painted steel strut and clamps in those environments corrode within a few years of installation, generating inspection findings, losing structural integrity, and creating re-work costs in locations that may require chemical isolation or confined space procedures to access. Fiberglass strut and pipe clamps provide the same structural support as steel with complete immunity to those corrosion conditions, delivering the full operating life of the facility without a corrosion maintenance program on the support system itself.

Q: What Blue-White metering pump configurations are available for water treatment chemical dosing applications?
A: Blue-White peristaltic metering pumps are available in flow ranges from very small water district applications to large municipal treatment capacity, covering the full spectrum from small package treatment plants to major regional facilities. For sodium hypochlorite and other oxidizing disinfectants, peristaltic designs are preferred because they have no internal check valves for off-gassing chemistry to vapor lock, the pump tube is the only component contacting the chemical, and tube replacement is the only routine maintenance task. For coagulants, polymers, and other non-off-gassing treatment chemicals, Blue-White diaphragm metering pumps provide accurate stroke-rate dosing in configurations matched to the viscosity and pressure requirements of the specific chemical service. Both types are available in chemical-resistant materials appropriate for the full range of water treatment chemistry.

Q: Can Bonomi actuated valve packages be used in water treatment chemical feed isolation applications?
A: Yes. Bonomi pneumatic actuated valve packages with spring-return fail-safe closure are appropriate for chemical feed isolation applications in water and wastewater treatment facilities, providing remote isolation capability that keeps operators away from chemical areas during routine operation and delivering automatic fail-safe closure in emergency shutdown scenarios. For chemical feed valves in outdoor or high-humidity treatment plant environments, NEMA 4X rated electric actuators provide weatherproof protection appropriate for the exposure conditions. Explosion-proof actuator configurations are available for applications in areas with hazardous area classifications. All Bonomi actuated packages ship factory-assembled with actuator mounted and limit switches set,ready to install and commission without field assembly.

Q: Do you offer same-day shipping on water and wastewater treatment plant components?
A: Yes. All in-stock orders placed by 2PM EST Monday through Friday ship the same business day from our Atlanta-area warehouse via UPS and FedEx. We maintain deep inventory on Asahi PVC and CPVC thermoplastic valves, Spears Schedule 80 fittings, GF Signet instrumentation, Blue-White chemical metering pumps, fiberglass strut and clamps, and chemical-resistant tubing, the components water and wastewater treatment facilities most commonly need quickly. For treatment facilities managing critical spares programs, our sales team can discuss advance ordering arrangements to ensure replacement components are on hand before a failure makes them urgent. Orders of $250 or more qualify for free shipping.

Safe Water for the Public Starts with Reliable Systems Behind the Plant Gate.

Browse our full catalog of water treatment valves, corrosion-resistant piping, chemical metering systems, water quality instrumentation, and structural support hardware, or connect with our team to specify the right components for your treatment facility.

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