Industrial Specialties Mfg. is a manufacturer and distributor of brass pressure relief, miniature button, and miniature air vent valves.

Watts manufactures pressure reducing and relief valves for water safety, flow control, and steam regulation applications. These valves come in the following configurations: steam pressure, small to super capacity water pressure reducing, safety relief, automatic gas shutoff, by-pass control, combination ball /relief, pressure-only relief, temperature/pressure relief, and vacuum relief.

Ausco Inc. offers absolute pressure valves with evacuated bellows. These valves can handle fluid/ambient temperatures ranging from -300°F to 450°F, pressure ratings ranging from 0 to 10,000 PSI, and flow rates up to 40 GPM. They are capable of maintaining absolute pressures ranging from sea level up to 50,000 foot altitudes. Body materials include corrosion resistant stainless steel, aluminum, and titanium.

Maxpro Technologies manufactures high pressure valves, fittings, and tubing products. These valves have the following benefits: rising/non-rotating stem designs, tight shut-off capabilities, corrosion resistance, stem-to-body sealing, stem sleeves, safety weep holes, and pressure ratings up to 60,000 PSI.

BuTech manufactures high, medium, and low pressure valves for petroleum, chemical, industrial, and power generating applications. These valves are manually operated, they can be fitted with hydraulic/pneumatic actuators, and will work in temperatures ranging from -100 to 600°F.

Generant offers all-brass pressure regulators in a variety of configurations, including Series J air pressure regulators, Series F fluid regulators, Series HC high capacity pressure regulators, Series QA pressure regulators, etc.

Armstrong develops pressure reducing valves in direct acting, internally piloted piston-operated, and externally piloted configurations. Direct acting pressure reducing valves implement flat diaphragms or convoluted bellows, and they are constructed from the following materials: cast bronze, stainless steel, cast iron, zinc, aluminum, and ductile iron. Internally piloted piston-operated pressure-reducing valves are ideal for steam, air, and non-corrosive gas applications. Externally piloted pressure-reducing valves come in spring operator, air operator, and back pressure regulator configurations.

Diller Brown distributes valves from several manufacturers, including Pratt, Proco Products Inc., AUMA, Valvcon, CLA-VAL, Crane Engineered Products, Tyco Valves, and Milliken Valve Company.

Clippard Minimatic offers pneumatic electronic valves in the following configurations: 2-way, 3-way, 4-way, proportional, latching, compact, 10mm, and 15mm.

Cash Valve (Tyco) manufactures pressure regulating and back pressure valves for steam, air/gas, liquid, and cryogenic applications. These valves come in the following configurations: high capacity, high pressure, pilot-operated pressure reducing, ammonia, heavy oil, mobile homes, water, air, and light oil.

HiP manufactures ultra-high pressure valves, high pressure valves, medium pressure valves, and pressure valve fittings/tubing. These valves feature maximum pressures ranging from 20,000 to 150,000 PSI.

Madden Manufacturing supplies Griffco diaphragm back pressure valves for chemical feed system applications. The valves can handle pressures ranging from 10 to 350 PSI.

Neptune manufactures field adjustable back pressure valves that can handle pressures up to 50 PSI. These valves are used when the injection point is below tank level or in environments where the bulk tank has high head pressure ratings.

NetMotion Inc. is a supplier of large capacity, back pressure, and pressure regulating valves for pure gas control and R&D analysis applications.

Phoenix Controls manufactures low and medium pressure valves. Low pressure valves can handle pressures ranging from 0.3" W.C. to 3.0" W.C., while medium pressure valves can handle pressures ranging from 0.6" W.C. to 3.0" W.C.