Boig & Hill, Inc. - Valley Stream, NY
Distributor, Custom Manufacturer, Manufacturers' Rep
Distributor of valves including pressure safety relief valves for process industries. Valves are available in various models with specifications including valve inlet size ranging from 1/2 in. to 8 in. & outlet size ranging from 1 in. to 10 in. & inlet operating temperature ranging from minus 20 degrees F to plus 400 degrees F. Features of valves include stainless steel & brass body, carbon steel & bronze bonnets & rust proof chrome alloy springs. Valves are suitable for air, steam, vapor & liquid. Meets ASME standards.
Brand Names: Farris, Teledyne Farris
www.boighill.com/

Magnatrol Valve Corp. - Hawthorne, NJ
Manufacturer, Custom Manufacturer
Manufacturer of two-way solenoid valves designed for standard applications in sizes from 1/4 in. to 3 in.& pressures up to 500 PSIG available in bronze & stainless steel. Also manufacturer of two-way & three-way solenoid valves in sizes from 1/4 in. to in. & pressures up to 10,000 PSIG that are designed to handle dirty & viscous liquids & are constructed of bronze, stainless steel, Monel®, Hastelloy & titanium. High pressure solenoid valves, rotary valves, fire link valves & latching valves are also available.
www.magnatrol.com

E-Motion, Inc. - Eugene, OR
Distributor, Manufacturer
Distributor of process pressure or vacuum safety relief valves. Items are available in stock.
Brand Names: Duravalve, Fabco-Air, Metalwork, STC, Truflo
www.e-motionllc.com/Articles.asp?ID=159

Industrial Accessories Co. - Mission, KS
Manufacturer, Custom Manufacturer, Service Company
Custom manufacturer of process & pressure safety relief valves. Pressure valves are available with 42 in. to 127 in. factory setting & 1-1/2 in. MPT to 2-1/2 in. MPT thread size. Pressure relief valves are suitable for wood products, grain agriculture, food, cement, ethanol, cement, mining, bio-fuels, petro chemicals, plastics, coal & pulp & paper industries.
iacintl.rtrk.com/?scid=2672323&rl_alt=http%...

Doering Company - Clear Lake, MN
Manufacturer, Custom Manufacturer, Service Company
Custom manufacturer of process pressure safety relief valves featuring aluminum & stainless steel housings. Relief valves are available with 3,000 psig & 5,000 psig pressure rating & 1/8 in., 1/4 in. & 3/8 in. NPT porting.
www.doering.com/valves-pressure-control.php

Circle Valve Technologies Inc. - Harleysville, PA
Distributor
Distributor of pressure safety relief valves. Zero leak, positive resealing, wide range of cracking pressures, high flow capacity, aluminum, stainless steel, brass, steel, male/female pipe & tube connections. Seal materials include Buna N, Neoprene, Viton®, EPR & PTFE. Market served include industrial gas, chemical, medical, power, marine & oil & gas processing.
catalog.circlevalve.com/category/relief-val...

Process Pressure Safety Relief Valves Products
	500 Series Relief Valves 0.5 to 150 psig HP500 Series Relief Valves 150 to 575 psig

Keckley Company - Skokie, IL
Manufacturer, Custom Manufacturer
Manufacturer of standard & custom process pressure safety relief valves including pressure or vacuum relief valves. Pressure or vacuum safety relief valves feature stainless steel semi-nozzle trim, inlet & outlet flange, bolted bonnet design, enclosed spring, lapped seats to optical flatness, dual control rings which allows adjustability for precision opening with minimum pre-open or simmer & exact blow down control, heavy duty lift lever assembly & factory-sealed adjustments to prevent tampering or dis-assembly. Safety relief valves are suitable for steam, air & non-hazardous gas service. Applications include steam boilers & generators, pressure reducing stations, reciprocating or rotary air or gas compressors & pressure vessels including tanks, receivers, intercoolers, oil-gas separators & lines.
www.keckley.com

Pro Dyne Corp. - Phoenixville, PA
Distributor, Custom Manufacturer, Manufacturers' Rep, Service Company
Stocking distributor of valves including pressure control, reducing, regulating & process safety relief valves. Types also include miniature, three-way & one, two & three-piece ball, swing & wafer check, butterfly & knife gate valves.
www.prodynecorp.com/index.html

Imac Systems, Inc. - Tullytown, PA
Distributor, Manufacturer, Custom Manufacturer, Service Company
Manufacturer of process pressure safety relief valves for instrument protection, farm taps, gas engines & process industry installations involving air & other gases. Relief valves are available in high tensile strength gray iron ASTM A 126-66 Class B or cast ductile iron ASTM A-445-66 material construction with seat discs made of Buna N permanently bonded to the seat disc holder, seat disc holder made of die cast aluminum, adjusting screw of machined aluminum & both black anodized for corrosion protection. Available with minimum relief pressure settings of 1/2 psig (.04 bar) & maximum relief pressure settings of 300 psig (21 bar).
www.imacsystems.com/popreliefvalve.htm

MAXPRO Technologies, Inc. - Fairview, PA
Distributor, Manufacturer, Custom Manufacturer
ISO 9001:2008 certified manufacturer & distributor of standard & custom high pressure relief valves including process pressure safety relief valves. Relief valves are available in stainless steel material & with nylon seat & PTFE/EPDM seals. Specifications include orifice dia. of 0.007 in., inlet & outlet connection sizes of 1/4 in. FNPT & working pressures ranging from 1000 psi to 10000 psi. Features poppet design. Relief valves are used for pressure control in gas & liquid applications. Same day shipping available.
high-pressure-products.maxprotech.com/viewi...

Process Pressure Safety Relief Valves Products
	2 Way Angle High Pressure Valves

OCECO, Inc. - Tiffin, OH
Manufacturer
Manufacturer of pressure relief devices (PRD) including tank pressure valves & vent valves. Feature similar design to T-vent valves. Sizes available include 2 in., 3 in., 4 in., 6 in., 8 in. & 10 in. Vent valves are designed for pressure & vacuum relief. Vapors discharged can be routed to scrubber or another vessel. Vent valves are available with pipe-in for blanket use.
www.oceco.com/Products/Default.aspx

Ratermann Manufacturing, Inc. - Livermore, CA
Distributor, Manufacturer, Custom Manufacturer, Service Company
Manufacturer & distributor of cryogenic safety relief valves including process pressure safety relief valves. Available in bronze & stainless steel construction & angle type. Safety relief valves have maximum operating pressure ratings up to 725 psi. Safety relief valves are approved for air gases, vapors & cryogenic liquefied gases including LNG. Safety relief valves are used as safety devices for protection against excessive pressure in stationary & movable gas cylinders.
Brand Names: Herose, RMI
www.valvesgas.com//safety-valves.html

Flow Solutions, Inc. - Locations
Distributor, Custom Manufacturer, Manufacturers' Rep, Service Company
Stocking distributor of ASME safety valves for small air compressor systems & related applications. Available set pressure range from 25 psi to 350 psi. Set tolerance plus/minus 3 percent of set pressure. 250 degrees maximum temperature.
www.flowsolutions1.com/

North American Machine Works - Folcroft, PA
Distributor, Manufacturers' Rep, Service Company
Manufacturers rep. & distributor of process pressure relief valves. Types of pressure relief valves include spring-loaded & pilot-operated pressure relief valves, buckling pin relief valves, triple offset butterfly valves, zero-leakage butterfly valves, metal seated butterfly valves & low pressure safety relief valves.
Brand Names: BS&B, Farris, Solent & Pratt: TOBV
www.namachineworks.com/safety-relief-valves...

Cici Boiler Rooms, Inc. - Evansville, IN
Manufacturer, Custom Manufacturer, Manufacturers' Rep, Service Company
Manufacturer's representative of commercial & industrial pressure relief valves.
Brand Names: Conbraco, Kunkle, Watts
www.ciciboilers.com/parts_reliefvalves.htm

American Precision Supply, Inc. - Hampshire, IL
Distributor
Distributor of process pressure safety relief valves. On-site inventory management programs and 24 hour emergency services available.
www.apsupplies.com/industrial-valve-supplie...

Oventrop Valves - East Granby, CT
Manufacturer, Custom Manufacturer, Service Company
Manufacturer & service provider of boiler accesories, gas cocks, solar collectors, HVAC equipment, radiator supplies, regulators, solar energy equipment & valves.

Central States Group - Omaha, NE
Distributor, Custom Manufacturer
ISO 9001:2000 certified distributor of process pressure safety relief valves.

Haskel International - Burbank, CA
Manufacturer, Custom Manufacturer
ISO 9001 certified custom manufacturer & distributor of regulating relief valves including pressure safety relief valves for chemical process applications. Specifications of valves include 30 psi to 60,000 psi pressure range, 1/4 in. to 3/8 in. pressure & outlet ports & 0.070 in to 0.296 in. orifice dia. Features of valves include aluminum & stainless steel body, stainless steel & nylon seats & Buna-N®, Viton®, PTFE & EPR seals.
Brand Names: Haskel

Cadence Technologies, Inc. - Alpharetta, GA
Distributor, Custom Manufacturer
Distributor of flow recording & indicating instruments including sanitary pressure gauges & transmitters, sanitary level gauges & transmitters, sanitary temperature, gauges & transmitters, controllers & chart recorders. Services include line management, engineering, design, installation, troubleshooting & pump repair.

Dewco Pumps & Equipment, Inc. - Lakewood, CO
Distributor
Stocking distributor of pressure safety relief & process valves available in 1/4 in., 1/2 in. & 1in. sizes. Valves are made from polypropylene, polyvinylidene flouride, polvinyl chloride & stainless steel.

Fluidtechnik - Uwchland, PA
Distributor
Distributor of process pressure safety relief valves. Ball, check, plug, pressure reducing & bleed valves are also available.
Brand Names: Dusterloh, EPE

North American Safety Valve Industries, Inc. - Kansas City, MO
Distributor, Service Company
Distributor of safety & pressure relief valves, remanufactured valves & safety valve parts. Valve repair services.

Tantaline - Waltham, MA
Manufacturer, Custom Manufacturer, Service Company
Manufacturer of extremely acid resistant pressure safety relief valves at 15-20% less than Hastelloy® safety relief valves, utilizing tantalum surface alloys. Features include higher corrosion & acid resistance than Hastelloy®, titanium & zirconium materials. Industries served include chemical process, pharmaceutical, oil & gas, offshore, mining, plating, energy & OEM. Tantalum treated products are available with 3-year warranty.

G & O Thermal Supply Co. - Chicago, IL
Distributor, Custom Manufacturer
Distributor of valves, including process safety relief, check & boiler blow down valves. Safety valves used for air, steam & water.
Brand Names: Dole, Kunkle, Watts