2000/8/21 · Regulating valves are used in refrigeration systems to maintain pressures or flows appropriate to either the system's operational needs or the end user's specific targets. Operational needs vary according to system complexity and duty cycle. They may include conditions such as:

Pressure Regulating Valves. Hamilton 1/2″-3/4″ Nylon By-Pass and Pressure Regulating Valve, 0-150 PSI $ 22.79. Pressure relief valves, agricultural spray guns, unloader valves, spray nozzles, accessories, complete sprayers, replacement parts, and other water service products.

TeeJet® Pressure Relief / Regulating Valve Multiple Variants Spraying Systems. Starting at: $44.56 . View Details +Add to Wishlist; Bypass & Relief Valves Multiple Variants Hamilton. Starting at: $43.78 . View Details +Add to Wishlist; Constant Flow Valves - CFValves™ - for All Spray Applications

The difference is that a back pressure regulator is continually moving and has pressure sensors to react accordingly, whereas the pressure relief valve is more 

Pressure Reducing Valves are designed to reduce incoming water or steam pressure to a safer constant predetermined downstream level.

Relief valves locked open Relief Type (PV, DO, PO, Int, WOU, WOD) Overpressure relief pipe directed to a tmosphere Vent pipe opening protected from bugs/weather Pipeline markers/sign present Regulator set point (psi) Relief vent pressure (psi)

Pressure regulating or reducing valves (PRVs) help control downstream water pressure in commercial and residential systems. Each water pressure regulating valve 

A relieving regulator can bleed pressure from downstream if the pressure rises above the setpoint, even in a no-flow condition. Normally this is done by a relief valve (or hole) in the center of the diaphragm and the pintle assembly. A large majority of pressure regulator applications use a relieving regulator. Figure 1: Relief Valve

The Belgas F289 is a Pilot Operated Back Pressure Regulator that functions as a high flow relief valve with an adjustable setpoint. Use the F289 in place of a standard relief valve to protect against overpressurization in the downstream system. The pilot regulator allows for accurate back pressure control with minimal buildup over the set pressure for the main valve's full opening.

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.

Cash Valves - Pressure Regulating, Temperature Regulating, Back Pressure, Vacuum, Cryogenic and Control. Cla Val - Automatic Valves: Pressure Relief / Sustaining, Back Pressure, Surge Anticipator, Pressure Reducing, Flow Control, Level & Float Control, Altitude, Check, Electronic Control, Solenoid, Air, Pump Control and Fire Protection. Other