Ohio Valley Industrial Services, Inc. - Coraopolis, PA
Distributor, Manufacturer, Custom Manufacturer, Service Company
Distributor of safety relief valves made from stainless steel. Various features include captured molded seat design, lock wire, color coded springs and labels, manual override option and pressure settings.
Brand Names: Parker, Partek
www.ovisinc.com/instrumentation_industry.ht...

Circle Valve Technologies Inc. - Harleysville, PA
Distributor
Distributor of valves. Check valves, solenoid valves, ball valves, cryogenic valves, relief valves, needle valves, plug valves, actuated valves, diaphragm valves, pressure regulators, cylinder regulators, back pressure regulators, control valves, & tube fittings. Markets served include industrial gas, chemical, medical, power, marine, oil & gas processing.
catalog.circlevalve.com/category/relief-val...

Stainless Steel Safety Relief Valves Products
	500 Series Relief Valves 0.5 to 150 psig HP500 Series Relief Valves 150 to 575 psig D500 Series ASME Safety Relief Valves 15 to 150 psig More

East Coast Stainless - Newark, DE (Serving Eastern Pennsylvania)
Distributor, Service Company
Distributor of sanitary & safety relief valves made from 316 & 316L stainless steel. Types of valves include ball, check & globe valves. Cast & forged valves are available in threaded & socket weld or flanged ends.
www.eastcoaststainless.com/

North American Machine Works - Folcroft, PA
Distributor, Manufacturers' Rep, Service Company
Manufacturers rep. & distributor of stainless steel safety 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
www.namachineworks.com

Chesmont Engineering Company, Inc. - Exton, PA
Custom Manufacturer
Custom manufacturer, design, installation and maintenance of propane systems including tanks, burners, blenders, vaporizers, peak shaving systems, primary fuel & standby systems, relief valve replacement & conversion. Emergency service, preventative maintenance, inspection, and testing. Safety training courses for employees, managers, and supervisors. Assist in the development of in-house safety training programs. NFPA, OSHA, FM, and IRI compliance.