Control Valves

How does a pressure control valve work exactly? If we start closing the control valve, does pressure increase?

or decrease? and to be clear, since we are closing the control valve and therefore restricting flow, wouldnt the liquid pressure up before the control valve?

A pressure control valve is a pressure regulator. Its basic requirement is the input pressure must be higher than the output.
It automatically adjusts flow to maintain a steady output pressure.
It is not something you shut or open, but just adjust output pressure (if meant to be variable).
Most are set for a particular out pressure, and sealed off at that.

Discover Control Valves On eBay Below:

Aro E21286 O24 D Solenoid Air Control Valve Used
Aro E21286 O24 D Solenoid Air Control Valve Used
$88.00
Fluid Controls Inc 4K11 2 S Check Valve 1 4 NPT E90B 74876 00031
Fluid Controls Inc 4K11 2 S Check Valve 1 4 NPT E90B 74876 00031
$39.00
Fluid Controls Inc 4K11 2 S Check Valve 1 4 NPT E90B 74876 00031
Fluid Controls Inc 4K11 2 S Check Valve 1 4 NPT E90B 74876 00031
$34.00
Parker Pneumatic Control Valve 4522AD30ABBB53
Parker Pneumatic Control Valve 4522AD30ABBB53
$232.64
FLOW MATRIX H2O FLOW CONTROL VALVE FMC 2000
FLOW MATRIX H2O FLOW CONTROL VALVE FMC 2000
$249.00
NORGREN PROSPECTOR DIRECTIONAL CONTROL POPPET VALVES E1024C CC
NORGREN PROSPECTOR DIRECTIONAL CONTROL POPPET VALVES E1024C CC
$349.00
Schrader Bellows 53181 1000 200 PSIG Air Control Valve
Schrader Bellows 53181 1000 200 PSIG Air Control Valve
$89.95
Parker FC701 5 32 0 Flow Control Valve New No Box
Parker FC701 5 32 0 Flow Control Valve New No Box
$10.00
Parker FC701 5 32 0 Flow Control Valve Pack of 3 New No Box
Parker FC701 5 32 0 Flow Control Valve Pack of 3 New No Box
$27.19
PARKER 4501AF10AAAE53 AIR VALVE CONTROL 150 PSIG MAX NEW
PARKER 4501AF10AAAE53 AIR VALVE CONTROL 150 PSIG MAX NEW
$90.00
Legris 77706000 3 8 Inline Flow Control Valve New No Box
Legris 77706000 3 8 Inline Flow Control Valve New No Box
$41.00
FLOWSERVE METAL CHARACTERIZED SEATED CONTROL VALVE KIT PARTSNOT WORKING MISSING
FLOWSERVE METAL CHARACTERIZED SEATED CONTROL VALVE KIT PARTSNOT WORKING MISSING
$40.00
nos Rego Products MF 125 B FLOW CONTROL VALVE
nos Rego Products MF 125 B FLOW CONTROL VALVE
$89.99
Parker Flow Control Valve F800B
Parker Flow Control Valve F800B
$69.31
Parker Flow Control Valve 3371003
Parker Flow Control Valve 3371003
$57.36
Parker Flow Control Valve 3381103
Parker Flow Control Valve 3381103
$41.42
Parker Flow Control Valve 32501000
Parker Flow Control Valve 32501000
$88.43
Siebe MK 4601 0 0 2 Control Valve Actuator New No Box
Siebe MK 4601 0 0 2 Control Valve Actuator New No Box
$111.77
PARKER F600S 11U FLOW CONTROL VALVE STEEL 5000 PSI 345BAR 8 GPM NEW 169768
PARKER F600S 11U FLOW CONTROL VALVE STEEL 5000 PSI 345BAR 8 GPM NEW 169768
$53.63
NIB Johnson Controls V 6135 1 Three Way Air Switching Valve
NIB Johnson Controls V 6135 1 Three Way Air Switching Valve
$45.00
NEW ROSS 2751A4902 PRESSURE CONTROL VALVE 1 10 BAR 1 8 3 8 NPT GB
NEW ROSS 2751A4902 PRESSURE CONTROL VALVE 1 10 BAR 1 8 3 8 NPT GB
$195.00
NEW VOLVO GM 52431 Q86 HEIGHT CONTROL VALVE
NEW VOLVO GM 52431 Q86 HEIGHT CONTROL VALVE
$80.00
NNB DANFOSS COMATROL FLOW CONTROL CARTRIDGE VALVE CP612 1 B 0 A230
NNB DANFOSS COMATROL FLOW CONTROL CARTRIDGE VALVE CP612 1 B 0 A230
$32.40
NUMATICS 229 310 SPEED CONTROL KIT FOR MARK 7 SOLENOID VALVES 229310
NUMATICS 229 310 SPEED CONTROL KIT FOR MARK 7 SOLENOID VALVES 229310
$28.88
DeZurik Precision Electric Control Valve 9104369 8
DeZurik Precision Electric Control Valve 9104369 8
$1,595.00
Dresser Masoneilan 31000 Series Rotary Control Valve  Camflex II 35 31210 2
Dresser Masoneilan 31000 Series Rotary Control Valve Camflex II 35 31210 2
$925.00
NEW FISHER CONTROLS R67SSX00012 VALVE REPAIR KIT TYPE 67SS
NEW FISHER CONTROLS R67SSX00012 VALVE REPAIR KIT TYPE 67SS
$105.00
Automatic Valve NC308B22 D39A Control Valve New No Box
Automatic Valve NC308B22 D39A Control Valve New No Box
$121.77
TYCO VALVES AND CONTROLS 221 819 300 430 500 GEAR OPERATOR
TYCO VALVES AND CONTROLS 221 819 300 430 500 GEAR OPERATOR
$400.00
Vickers FCG 02 1000 31 Flow Control Valve Used
Vickers FCG 02 1000 31 Flow Control Valve Used
$203.77
NEW Ross 1968B3007 Flow Control Valve Rev D READY TO SHIP
NEW Ross 1968B3007 Flow Control Valve Rev D READY TO SHIP
$19.00
ABB 3HNM 07485 1 Pressure Control Valve 05050062 Used
ABB 3HNM 07485 1 Pressure Control Valve 05050062 Used
$976.77
NOS Parker D3A 4D20 Air Piloted Hydraulic Directional Control Valve 3000 psi
NOS Parker D3A 4D20 Air Piloted Hydraulic Directional Control Valve 3000 psi
$500.00
Numatics 081SS500K000030 Pneumatic Control Valve 150 PSIG 120VAC USED
Numatics 081SS500K000030 Pneumatic Control Valve 150 PSIG 120VAC USED
$29.99
JOHNSON CONTROLS V43 Pilot Operated Pressure Water Regulating Valve V43CV 1C
JOHNSON CONTROLS V43 Pilot Operated Pressure Water Regulating Valve V43CV 1C
$470.25
SMC AS3301F Control Valve Lot of 5
SMC AS3301F Control Valve Lot of 5
$20.00
Parker F1620S Colorflow Flow control Valve NEW B250
Parker F1620S Colorflow Flow control Valve NEW B250
$239.99
BOSCH R200b D81WV10P1V1068W5024 0000 Solenoid Operated Directional Control Valve
BOSCH R200b D81WV10P1V1068W5024 0000 Solenoid Operated Directional Control Valve
$206.97
PARKER F800S 11JN FLOW CONTROL VALVE
PARKER F800S 11JN FLOW CONTROL VALVE
$60.00

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