The Welker IR–2KP Instrument Regulator is designed to provide an adequate output pressure for devices that are unable to sustain high pressures. To set the desired output pressure an adjusting screw on the device is tightened. It has a piston design for higher output pressures.
The Welker CV-1 Check Valve is a ball-type valve designed to allow product flow in one direction only. The ball in the standard CV-1 is spring-loaded to remain shut and will only operate once the upstream or inlet pressure exceeds the tension on the spring; this is referred to as the “cracking pressure.”
The CV-1 can be ordered without a spring for vertical installation; without a spring, gravity causes the CV-1 to remain shut until upstream or inlet pressure exceeds the downstream or outlet pressure. Shutoff of the liquid or gas is achieved in both styles when the upstream or inlet pressure falls below the downstream or outlet pressure and the ball seats on an O-ring, forming a positive seal.
The Welker IR-4 Instrument Regulator is designed to provide an adequate output pressure for devices that are unable to sustain high pressures. Pressure is reduced as it travels from the regulator’s inlet port to its outlet port. In order to set the desired output pressure, an adjusting screw on the device is tightened, pushing down on a spring inside the device. The spring then pushes down on a piston or diaphragm, which, in turn, pushes against a poppet. When high pressure is applied to the regulator’s inlet port, the poppet is moved up, allowing only the set amount of pressure to pass through the device.
The Welker RV-1 Relief Valve is designed to protect instruments and regulators from overpressurization. The RV-1 is specifically designed to relieve moderate capacity instruments in the 0-200 PSIG range.