A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The word is derived from the Latin valva, the moving part of a door, in turn from volvere, to turn, roll.
The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction. Modern control valves may regulate pressure or flow downstream and operate on sophisticated automation systems.
Valves have many uses, including controlling water for irrigation, industrial uses for controlling processes, residential uses such as on/off and pressure control to dish and clothes washers and taps in the home. Even aerosols have a tiny valve built in. Valves are also used in the military and transport sectors. In HVAC ductwork and other near-atmospheric air flows, valves are instead called dampers. In compressed air systems, however, valves are used with the most common type being ball valves.
Hydraulic Valve,Hydraulic Control Valve,Hydraulic Solenoid Valve,Pressure Control Valve GRH , https://www.grhcn.net
Characteristic
Excellent stepless fine-tuning device allows plus-minus calibration of flowmeter;
High accuracy and repeatability within the large range of flow; Superior accuracy of constant flow;
Low maintenance, low wear, long working life;
Low pressure loss, genuine gravity flowmeter;
Accuracy regardless of pressure fluctuations, temperature variation, viscosity;
Aluminum, cast iron and stainless steel materials of construction for choice.
Model
TCS-40-1
TCS-50-1
TCS-50H-1
TCS-80-1
TCS-80H-1
TCS-100-1
TCS-100H-1
TCS-150-1
TCS-150H-1
Size
40mm/1.5''
50mm/2''
80mm/3''
100mm/4''
150mm/6'' or 100mm/4''
Flow Range(L/min)
25-250
38-380
55-550
75-750
115-1150
130-1300
170-1700
225-2250
300-3000
Volume Per Revolutior
0.309L
0.681L
1.839L
5.102L
9.507L
Max Pressure
108Bar/150PSI
Accuracy
±0.2%
Repeatability
≤0.5%
Unit
Liter/US Gallon/IMP Gallon
