Circle Valve Technologies Inc. offers stainless steel high pressure relief valves in 1/4" and 1/2" sizes with viton, Buna N or neoprene O rings. Relief valve products feature zero leakage up to 95% of cracking pressure, no squeal or chatter, positive reseal at high percentage of cracking pressure, 0 pressure rise with increasing flow and external adjustment.

Parker Hannifin Corp. offers automatic stainless steel pressure relief valves rated from 3705 psi to 20,000 psi to with inlet sizes from 1/4" to 3/4" and 1/2"  FNPT outlets. Inlet connection options include medium pressure inverted compression, MPI tube stub, MNPT and high pressure cone thread. Seals are available in materials such as Buna-N rubber, fluorocarbon rubber, ethylene propylene rubber and highly fluorinated fluorocarbon rubber.

Flowserve offers ball valves for high pressure fluids rated to 6000 psi featuring low torque 1/4" turn operation, blowout proof stem and ASME B16.34 construction in sizes ranging from 1/2" to 2" with operational temperature range from -40°F to 450°F.

A-T Controls, Inc. supplies stainless steel high pressure 2 piece direct mount automated and manual ball valves in 1/4" to 2" sizes featuring 300 psi WOG, pyramidal stem packing system, blow out proof stem and locking handle.

Sharpe Valves offers high pressure stainless steel ball valves in sizes ranging from 1/4" to 2" with derlin or peek seats and TFE, grafoil or viton seals. Additional features include fully encapsulated body seals, live loaded stem seals, slotted seat design, integral mounting pad and locking handle.

Check-All Valve supplies universal high pressure stainless steel check valves featuring a one piece body design with female pipe threads and features such as metal to metal seating, nominal pipe sizes from 3/8" t0 1 1/2" and operating pressures up to 10,000 psi at 100°F.

AUSCO Inc. supplies absolute stainless steel pressure valves employing evacuated bellows for pressure control of air, hydraulic fluid, fuel. heat transfer fluids or nitrogen liquid propellant as well as other gases and fluids. Mounting types offered include cartridge, line, manifold, rosan or custom options. Operational pressures range up to 10,000 psi and temperatures from -300°F to 450°F. with flow rates up to 4gpm.

BuTech offers stainless steel high pressure valves for pressures up to 150,000 psi at 72°F featuring 1/4" to 1" coned and threaded tube, glass-filled teflon packing, positive gland locking device and stem styles including vee, regulating, metering and micro-metering. High pressure valves also can be fitted with pneumatic or hydraulic actuators for remote control.

HiP supplies stainless steel high pressure valves designed to handle pressures up to 100,000 psi featuring non-rotating tips, packing glands equipped with locking devices and optional remote control air operators as well as tubing connection from 1/16" to 1" and piping connections from 1/8" to 1" NPT.

Primary Fluid Systems offers stainless steel high pressure top valves with operational pressure ranges from 50psi to 350psi, viton diaphragm material in threaded, socket or flanged configurations.

Metex supplies stainless steel high pressure 2 way solenoid valves in 1/4" to 3/4" sizes with normally closed construction. Valves feature operation from 450psi to 1500psi, AC or DC operation and angle body design.

Circle Valve Technologies, Inc. is a distributor for a variety of valve manuifacturers. Available products include high pressure stainless steel valves such as the R6000 series right angle relief valve vailable in low, medium, high and extra high pressure models. Additional stainless steel high pressure valves include 5300 series featuring service up to 10500 psig.