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500系列背壓調(diào)節(jié)器

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商鋪產(chǎn)品：39條

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產(chǎn)品簡介

APPLICATION:Ventlinesonoilandgasseparators,flowtreaters,compressorstations,gasgatheringsystems

詳細介紹

APPLICATION:
Vent lines on oil and gas separators, flow treaters, compressor
stations, gas gathering systems.
PRESSURE RANGE:
50 psig to 500 psig
PILOT SUPPLY PRESSURE:
40 psig

OPERATION:
The Pilot Assembly and Motor Valve Stem Assembly (Crosshatched) are the only moving units in the regulator. The PILOT PLUG consists of two stainless balls rigidly connected together. The upper seat for the PILOT PLUG is the Motor Valve Diaphragm Pressure inlet (Violet to Yellow). The lower seat for the PILOT PLUG is the pressure vent (Yellow to Atmosphere).
The PILOT SPRING in the bonnet loads the upper side of the Pilot Assembly and is opposed on the underside by Upstream Pressure (Red) in the BELLOWS ASSEMBLY.
Assume the PILOT SPRING is compressed with the ADJUSTING SCREW for a set pressure greater than the Upstream Pressure (Red) in the BELLOWS ASSEMBLY. The Pilot Assembly is forced downward by the PILOT SPRING. The lower seat for the PILOT PLUG (Yellow to Atmosphere) is closed ａnd the upper seat for the PILOT PLUG (Violet to Yellow) is open. This allows Pilot Supply Pressure (Violet) to load the MOTOR VALVE DIAPHRAGM to close the motor valve. The areof the MOTOR VALVE DIAPHRAGM is sixteen times the area ofthe motor valve seat, assuring a positive shut-off.
As the Upstream Pressure (Red) increases to the set pressure, the BELLOWS ASSEMBLY expands upward against the Pilot Assembly, moving the PILOT SPRING to first close the upper seat (Violet to Yellow) and then open the pressure vent (Yellow to Atmosphere). As the Motor Valve Diaphragm Pressure (Yellow) is decreased, the Upstream Pressure (Red) acting under the motor valve seat, opens the valve.
With relief of Upstream Pressure (Red) through the motor valve, the Pilot Assembly assumes a position in which both seats of the PILOT PLUG are closed.
The intermittent bleed pilot, three-way valve action of the PILOT PLUG against its seat adjusts the Motor Valve Diaphragm Pressure (Yellow), repositioning the Motor Valve Stem Assembly to accommodate any rate of flow. The rapid but stable repositioning produces a true throttling action.

貨號	尺寸	連接方式	描述	操作壓力	工作壓力	維修包
A0202	2"	SCRD	250 SGT BP-S	500	500	R0109
A0201	2"	FLGD	250 FGT BP-S	500	500	R0109
A02021	2"	SCRD	250 SGT BP-STL	500	500	R0109
A02011	2"	FLGD	250 FGT BP-STL	500	500	R0109