types of pressure control valves pdf

Seven pressure-control valves will be discussed. These valves are: 1. Relief valves 2. Unloading valves 3. Sequence valves 4. Pressure-reducing valves 5. Counterbalance valves 6. Safety Valve Each of these valves works on the same principle; a spring force balances a hydraulic force.

Control Valve Unit Action ----- 7 Actuator Benchset Range----- 8 airset: A regulator which is used to control the supply pressure to the valve actuator and its auxiliaries. angle valve: A valve design in which one port is collinear with the valve stem or actuator, and the other to the type of end connections. packing: A sealing system

Pressure Relief Valve (PRV) A closed valve is to limit the pressure in to prescribed maximum by diverting some or all output of pump to tank. The pressure can rise in a hydraulic system if: 1. The flow rate from the pump is larger than the flow rate through the actuator 2. The volume of a closed system is reduced.

Pressure regulators · Counterbalance valves · Sequences valves · Unloading valves · Safety valves · Relief valves · Brake valve 

The DVB3 acts as a pressure relief valve with a reverse flow check. SS4A-A3 valve range: SS4A-A3 acts as a sequence pressure control valve . SU valve range: Comprising SU6A-U3/l, SUD6A-U4/l and SUD6A-V4/l unloading pressure control valves .

Control valves are an increasingly vital component of modern manufacturing around the world. Properly selected and maintained control valves increase efficiency, safe-ty, profitability, and ecology. The Control Valve Handbook has been a primary reference since its first printing in 1965.

A manifold valve is an essential component of pressure and differential pressure transducers. The main function of a manifold valve is to block or isolate the fluid flow to isolate process media from pressure instrumentation. The inclusion of a valve manifold in a tool helps it to be replaced or calibrated without requiring a shutdown.

includes, transducers, supply pressure regulators, manual operators, snubbers, or limit switches. There are two main types of control valve designs 

Modulating Ball Valve $ 93.16 $ 101.66 $129.45 Total Balancing Cost plus VBN Ball Valve per Coil $302.10 $319.61 $368.81 VRN Modulating Pressure Independent Control Valve $232.10 $261.38 $302.88 Flow verification by balancing contractor per coil. $40.00 $40.00 $40.00 Total of flow verification plus VRN Valve $272.10 $301.38 342.88

HC-Type Pressure control Valves HC Type Pressure Control Valves These valves are hydraulically damped, direct operated, pressure control valves which can be actuated by internal or external pilot pressure. They are available with integral check valves for use when reverse free flow from the secondary port to the primary port is desired.

They help in a variety of functions, from keeping system pressures below a desired limit to maintaining a set pressure level in part of a circuit. Different types of pressure control valves include relief, reducing, sequence, counterbalance, safety, and unloading. All of them are typically closed valves, except for reducing va See more