Relief Valves

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F.H. Gaskins Co., Inc. - Norfolk, VA Browse our catalog of products
Distributor, Custom Manufacturer, Service Company
Distributor of safety, vacuum & pressure relief valves. Types include spring & pilot operated valves. Specifications of pressure relief valves include sizes ranging from 1/2 in. MPT to 12 in. flanged & pressures ranging from 1/2 psi to 8000 psi. Materials include bronze, brass, iron, steel, stainless steel & exotic alloys.
Brand Names: Consolidated
The Lee Company - Westbrook, CT
Manufacturer, Custom Manufacturer, Manufacturers' Rep
Manufacturer of fluid-control components for applications including hydraulic & pneumatic systems in commercial & military aircraft, spacecraft, missiles, naval vessels, machine tools, down-hole oil tools, power generation equipment & race cars. Pressure relief valve products available include high or low flow rate models featuring high capacity miniature inserts, cracking pressures from 20 to 5400 PSID, no elastomers & up to 5000 PSI operational pressure tolerances. Other valve products offered include check, shuttle & piloting solenoid types.
Premier Hydraulics Inc. - Farrell, PA
Custom Manufacturer
Custom manufacturer or relief valves. Types include regulating, shut off, cartridge and ecology valves. Custom manufacturing capabilities include milling, drilling, plating, brazing, welding, thread coating and screw machining.
Gadren Machine Co. - Mount Ephraim, NJ Browse our catalog of products
Manufacturer of standard & custom vacuum pressure relief valves made from brass & 316 stainless steel for vacuum breakers & steam vessels. Vacuum relief valves are available in 1/4 in. to 3 in. sizes with 5 scfm to 150 scfm flow at 22 in./Hg. Stock items are also available. Meets MIL-I-45208A Spec.
Plast-O-Matic Valves, Inc. - Cedar Grove, NJ
Manufacturer, Custom Manufacturer
Manufacturer of standard & custom relief, pressure, back pressure or vacuum valves in angle & in-line designs for corrosive chemicals, water & ultra-pure liquids. Available in sizes ranging from 1/2 in. to 2 in. Features include no wetted metals & stainless steel external fasteners. Materials include PVC, natural polypro, PTFE & Kynar® PVDF. Services include product innovation, engineering, precision manufacturing, pressure, flow & corrosion-resistant plastic piping, quality testing & technical assistance. RoHS compliant.
Brand Names: True Blue
Valve Check, Inc. - Maplewood, MN
Manufacturer, Custom Manufacturer, Service Company
Designer & manufacturer of self cleaning, quick opening, & positive sealing check & relief valve products. Relief valve products offered include those made of aluminum, brass, steel & stainless steel. Seal compounds available for relief valve products include Viton®, neoprene, Buna, PTFE, silicone, fluoro-silicone, ethylene, propylene & Kalrez®. Factory set pressure tolerances are from 0.05 to 900 PSI with atmospheric or in line venting. Male & female NPT & other threaded ends are offered in 1/8 to 2 in. Mufflers & safety caps are also available
Emerson Process Management Regulator Technologies, Inc. - McKinney, TX Browse our catalog of productsCAD Drawings
Distributor, Manufacturer, Custom Manufacturer
ISO 9001:2000 certified manufacturer of relief valves including hydraulic relief valves. Types include back pressure relief valves. Features include heat & chemical resistance, high response time, noise reduction option & chemically compatible elastomers. Specifications include maximum inlet pressure up to 450 psig, maximum differential pressure up to 400 psig, relief set pressure from 15 psig to 375 psig & temperature range from minus 18 degrees C to 149 degrees C. Markets served include chemical, oil & gas, refining, pulp, paper, power, food & beverage, life sciences, waste water management, LNG, pharmaceutical & consumer. Products are CE certified & meet ASME & ANSI specifications.
Parker / Autoclave Engineers FCD - Erie, PA Browse our catalog of productsCAD Drawings
Manufacturer, Custom Manufacturer
Custom manufacturer of metal & soft seat relief valves for pressure gas systems, cryogenic systems & petrochemical applications. Specifications of relief valves include 3/4 in. NPT outlet connection, 0.062 in. to 0.312 in. orifice dia., 1500 psi to 75000 psi setting pressure at 100 degrees F temperature & 500 psi maximum back pressure at 100 degrees F temperature. Valves are capable of handling air, gases, steam, vapor & liquids.
Kepner Products Co. - Villa Park, IL CAD Drawings
Manufacturer, Custom Manufacturer
Custom manufacturer of relief valves including adjustable inline & cartridge relief valves made from stainless steel. Specifications of valves include 1/4 in. to 1/2 in. port size, minus 184 degrees C to plus 232 degrees C temperature, 50 psi to 2,000 psi crack pressure, flow rate up to 10 gpm & operating pressure up to 3,000 psi. Features include zero leak (bubble-tight) sealing, O-ring seals & poppet stop inside valve body.
Brand Names: Kepner
Generant - Butler, NJ
Distributor, Manufacturer, Custom Manufacturer
Custom manufacturer of relief valves in various types including thermal, safety, high pressure, cryogenic, vent & liquid cylinder pressure relief valves. RoHs compliant.
Brand Names: Bi-Lok
M & M Control - Grayslake, IL Line Card
Distributor, Manufacturer, Custom Manufacturer, Service Company
Master distributor of a wide variety of electronic, pneumatic & self-actuated valves, controls, controllers, regulators, gauges, meters, sensors for process, commercial and HVAC applications controlling temperature, flow, pressure and more.
Brand Names: Apollo, Aquatrol, CLA-VAL, Cash Acme, Consolidated, Kunkle, Landis & Gyr, Leonard, Leslie, Marsh...
TR Engineering, Inc. - Scotts Valley, CA
Manufacturer & designer of hydraulic safety relief valves made from steel & stainless steel. Valves are available with 3/8 in.-24 & 1/8 in. NPT thread sizes & 3,000 psi to 8,000 psi pressure. Relief valves are suitable for lifting systems or system using double acting hydraulic cylinders with large area ratio between the blind end & rod end. Made in the USA.
Singer Valve Inc. - Surrey, BC
Manufacturer of pressure and surge anticipating relief valves. Features include quick opening relief, adjustable pressure settings and adjustable closing speed. Suitable for higher pressure and to protect against power failure surges or pressure waves. FM and UL approved. Three year warranty.
Pacific Industrial Service Co. - St Helens, OR Browse our catalog of products
Distributor, Service Company
Distributor of pressure control, reducing, regulating & relief valves. Types include backpressure valves, flanged & threaded relief valves, vapor valves, pilot operated valves & high pressure valves. Serving a variety of industries such as pulp & paper mills, power generation plants, chemical plants, oil refineries, industrial processing plants, hi-tech industries, waste treatment plants, shipyards, food processors, utilities, pipelines/tank farms, HVAC steam services, hospitals, pipelines, marine & institutions.
Brand Names: Taylor
Aquatrol/Marsh - Elburn, IL
Manufacturer of ASME code safety & relief valves. Sizes ranging from 1/4 in. to 3 in. for steam, air, gas & liquid applications. Steam specialties division manufactures steam traps, radiator valves, FT traps & air vents. Features include adjustable tuned blow down, precision lapped metal to metal seating, stainless steel springs, rugged construction, closed seal hex cap or lever, inlet & outlet options.
DK-LOK U.S.A. - Locations Browse our catalog of productsCAD Drawings
ISO 9001:2008 & ISO 14001:2004 certified. Manufacturer of relief valves made from 316 stainless steel. Specifications include pressure up to 6,000 psig, temperature up to 204 degrees C, 50 psig to 6,000 psig cracking pressure, 1/4 in. to 1/2 in. OD & 1/4 in. to 1/2 in. pipe thread size. Meets OHSMS 18001, ASME & API standards.
Brand Names: D-Pro
Haskel International - Burbank, CA Browse our catalog of products
Manufacturer, Custom Manufacturer
Manufacturer of standard and custom regulating relief valves. Aerospace, automotive, defense, fluid power, laboratories, mining, oil, gas, electronics and other industries served. Lean manufacturing capable. Meets OSHA and ATEX standards. Six Sigma and CE certified. Meets MIL STD 1330 Spec. One year warranty.
Aqua Environment Co., Inc. - Stinson Beach, CA Browse our catalog of products
Manufacturer of high pressure control, reducing, regulating & relief valves made from bronze, anodized aluminum & Viton®. Specifications of relief valves include 300 psi to 6,000 psi set pressures, 0.78 in. dia. equivalent orifices, 1/4 in. male NPT inlet, 7/8 in. hex & 2.1 in. lengths & minus 40 degrees F to 160 degrees F operating temperatures. Pressure control valves are available in zero seal hysteresis design. Valves are suitable for discharge & interstage reliefs on high pressure compressors, reliefs on charging lines, regulators & manifolds & hydraulic systems & accumulator reliefs.
Century Instrument Co. - Livonia, MI Browse our catalog of products
Manufacturer of automatic pressure relief valves. Diaphragm pressure relief valve is self-contained, spring loaded & requires no air pressure or outside power source to function. Capabilities include relief at a preset pressure & reseating automatically when a safe working pressure is restored. Valves are available in a variety of body materials, linings & diaphragms & with pressure relief stetting from 10 to 150 psig. Applications include protecting piping systems of plastic or glass against over-pressure, pipe line surges & water hammer.
Lonergan Valve Services - Deer Park, NY
Distributor of valves including safety relief valves. Valves in standard & bellow designs are available. Features include trim, bonnet & spring. Safety relief valves have pressure ratings from 0 psig to 6000 psig & temperature ratings from -20 degrees F to 800 degrees F. Safety relief valves are available in different sizes in carbon steel, iron, bronze & stainless steel body materials. Meet ASME standards.
Brand Names: Lonergan
North American Machine Works - Folcroft, PA
Distributor, Manufacturers' Rep, Service Company
Manufacturers rep. & distributor of industrial safety valves including pressure control, reducing, regulating & relief valves. Types of valves include spring-loaded & pilot-operated pressure relief valves, buckling pin relief valves & low pressure safety relief valves. Triple offset butterfly valves, zero-leakage butterfly valves & metal seated butterfly valves are also available. Services include machining, mechanical contracting, coating, testing, installation, repairing, replacement, balancing, vibration troubleshooting, rigging & dismantling.
Brand Names: BS&B, Farris
Associated Steam Specialty Co. - Locations
Distributor, Manufacturers' Rep
Manufacturers rep. & distributor of safety relief valves. Types of valves also include trap valves, steam & water mixing valves, automatic balancing valves, manual balancing valves, solenoid valves, pneumatic valves, check valves, pressure reducing valves, temperature regulating valves, control valves, piston valves, radiator valves & test valves.
Brand Names: Kunkle, Macon, Trerice
Circle Valve Technologies Inc. - Harleysville, PA Browse our catalog of products
Distributor of 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.
Brand Names: 3B Filters, Aerodyne, Atkomatic, Circle Seal, Contromatics, Duravalve, Go, Gyrolok, Headline, Hoke,...
Modern Fluid Power, Inc. - Blanchester, OH
Distributor, Custom Manufacturer, Service Company
Stocking distributor of relief valves. Actuated, air, ball, butterfly, check, control, drain, float, gate, globe, instrument, needle, pipeline, pneumatic, safety, solenoid, three-way, steam, vacuum & mixing valves are also available.
Brand Names: Apollo, Aquatrol, Fulflo
Southwest Process Controls - Houston, TX
Distributor of relief valves. Available in a variety of sizes and cracking pressures and stainless steel, brass and alloy 400 materials with male and female NPT, tube fittings, metal gasket and O-ring face seals end connection options. Handles pressure up to 6000 psi and temperature up to 600 degrees F. Ball and plug, needle, check, block and bleed, hand, gauge, manifold, double-block and bleed, ambient and fluid sensing, regulator and steam trap valves are also available. Industries served include oil and gas, refining, petrochemical, power generation, pulp and paper, food processing, pharmaceutical and semiconductor.
Brand Names: Hy-Lok
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