Comprehensive Line of Chemical Feed Accessories

Griffco Valve manufactures a wide range of chemical feed equipment and pumping system accessories to help provide you with a high performance pumping system for typical chem-feed installation and improve accuracy, efficiency, longevity, and safety. 

• Back Pressure Valves
• Pressure Relief Valves
• Calibration Columns
• Chemical Injection Valves
• Gauge Guards
• Corporation Stops
• Pulsation Dampeners
• Fusion Dampeners
• Y-Strainers
• Chemical Feed Accessories
• Product Line Cards & Catalogs

Back Pressure Valves

Help stabilize the downstream pressure and ensure that certain types of pumps deliver consistent flows or allow for high accuracy and stable operation. Also known as loading valves or anti-syphon valves. 

• Flanged, Union, Threaded, Socket, and Grifflare connections
• Molded Noryl® or machined 316L SS top
• Integral instrument guard with alarm switch or gauge available
• PVC, CPVC & PVDF Grifflare fittings for connection to PFA tubing
• PTFE/EPDM diaphragm standard; other materials optional
• Medium-pressure version adjustable up to 800 psi (56 bar)

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Pressure Relief Valves

Protect pumps, systems, or tanks from an upset condition (e.g. pressure spike, over pressurization, closed valve). Also known as safety valves or bypass valves.

• Flanged, Union, Threaded, Socket, and Grifflare connections
• Molded Noryl® or machined 316L SS top
• Integral instrument guard with alarm switch or gauge available
• PVC, CPVC & PVDF Grifflare fittings for connection to PFA tubing
• PTFE/EPDM diaphragm standard; other materials optional
• Medium-pressure version adjustable up to 800 psi (56 bar)
• High-pressure version (relief valves only) up to 4000 psi (276 bar)

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Calibration Columns

Measure flow and help calibrate metering and dosing pumps to ensure a high level of accuracy. Also known as calibration cylinders or calibration pots.

• PVC plastic in sizes from 100mL to 40,000mL
• Borosilicate glass in sizes from 30mL to 20,000mL
• High-contrast graduated markings in mL and GPH
• Threaded standard; Socket, Flanged, Union, and Flanged with ball valve connections optional
• Plastic and metal end cap materials and dust cover, sealed, and EZ-Clean configurations

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Chemical Injection Valves

Enable passage of a liquid from a feed line into the center of a process line. Also known as injection quills.

• Serviceable (ICV) models offer pressures up to 350 psi; metal construction with 1/2” to 2” MNPT or male BSPT threaded and 1/2” to 2” Socket (plastic) connections
• Features integral Hastelloy® C spring-loaded check valve
• Multiple tip configurations and custom quill lengths available
• High-pressure (IVQ) models offer pressures up to 3000 psi; metal construction with 1/2”, 3/4” and 1” MNPT or male BSPT threaded connections

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Gauge & Instrument Guards​

Ensure optimal pressures are maintained in a chemical feed system and protect instruments against chemical attack. Also known as isolated pressure gauges.

• Gauge accuracy of ±2% (can be ordered with or without gauge)
• Features molded Noryl top, 316 SS gauge connection, and Viton O-ring material
• Will perform in any position and includes calibration screw for zeroing
• Sizes of 1/4”, 3/8”, 1/2” (DN 8, DN 10, DN 15) in NPT, BPST, Socket, Union, or Flange process connections
• Gauge port sizes of 1/4” standard; 1/8” and 1/2” optional

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Corporation Stops

Allow for the injector quill to be removed without turning off the process flow. Can be fitted with an optional poppet to help minimize chemical build-up and improve chemical dispersion.

• Features integral Hastelloy C spring-loaded check valve
• Optional poppet also acts like a check valve to minimize chemical build-up and improve chemical dispersion
• Metal and plastic ball valve materials (please inquire)
• Variable length quill chain (316 SS) lock
• Tip configurations: flat, bevel cut, and poppet tip
• Sizes from 1/2” to 1” (DN 15 to DN 25) in plastic (Union socket) and metal (male threads) and pressures up to 150 psi (10 bar)

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Pulsation Dampeners

Reduce harmful shock waves and deliver continuous chemical dosage at the injection point. Also known as a suction stabilizer.

• 22 volumetric sizes from 6 to 610 cubic inches (additional sizes available on request)
• Dampening effect ±2.5%
• Available in PVC, CPVC, Noryl, PP, PVDF and 316L SS construction
• Bladder in EPDM (standard); Viton®, Hapalon®, PTFE (optional)
• Standard maximum operating pressure @70˚F (21˚C) 150 psi (10 bar) for plastic models; 1000 psi (69 bar) for metal models (higher pressure units available on request)
• Sizes of 1/2”, 3/4”, 1” and 2” with Threaded, Union, Socket or Flanged inlet connections

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Fusion Dampeners

Combination of a pulsation dampener and a back pressure valve. Provides a smooth flow through the back pressure valve and reduces installation space.

• The combination of two proven Griffco products: a back pressure valve and a pulsation dampener that provide installation flexibility
• 2 volumetric sizes available, 6 and 10 cubic inches
• PTFE/EPDM, Viton, or Hypalon diaphragms and EPDM, Hypalon, Viton or PTFE bladders available
• Maximum operating pressure @70 ̊F (21 ̊C) 150 psi
• Space saving design available in PVC, CPVC, and PVDF
• NPT connection sizes of 1/4”, 3/8” and 1/2”

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Y-Strainers

Griffco Y-Strainers are designed to enhance the performance of chemical feed systems. The addition of a Y-Strainer to the suction side of the chemical feed pump prevents debris from entering the pump and clogging the check valves or damaging the interior of the pump head.

• Horizontal or vertical installation with 2:1 open area ratio and hex cap for easy access
• Construction materials include PVC, clear PVC, CPVC, PVDF or 316 SS
• Standard screen perforation 1/32” (plastic or metal); 1/16”, 1/8”, 3/16” also available
• Metal mesh sizes from 20 to 325 (other mesh sizes available on request)
• Maximum operating pressure @70 ̊F (21 ̊C) 150 psi (10 bar)
• NPT, BSPT, and Socket connections standard; True Union, Flanged, and connections optional

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