NV气体背压调节器-天津金镭科技有限公司手机版

详细介绍

APPLICATION:
Vent lines or pressure regulation on separators, heater
treaters, compressor stations, gas gathering and distribution systems
where it is desired that no gas be vented.
• Inside Buildings
• In populated areas
• Emissions regulated areas
• Sour or poisonous gas systems
PRESSURE RANGE:
3 psig to 300psig
OPERATION:
Assume the PILOT SPRING is compressed with the ADJUSTING SCREW for a set pressure greater than theUpstream Pressure (Red). The Pilot Assembly is forced downward by the PILOT SPRING. The lower seat for the PILOT PLUG (Yellow to Blue) is closed and the upper seat for the PILOT PLUG (Red to Yellow) is open. This lets full Upstream Pressure (Red) load the MOTOR VALVE DIAPHRAGM to close the valve.
As the Upstream Pressure (Red) increases to the set pressure, the Pilot Assembly moves upward against the PILOT SPRING to first close the upper seat (Red to Yellow) and open the lower seat (Yellow to Blue). Motor Valve Diaphragm Pressure (Yellow) is vented to the Downstream (Blue).
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 the Upstream Pressure (Red) through the valve, the Pilot Assembly assumes a position in which both seats of the PILOT PLUG are closed.
Motor Valve Diaphragm Pressure (Yellow) is regulated by the intermittent bleed pilot three-way valve action of the PILOT PLUG to reposition the Motor Valve Stem Assembly for changes in flow rate. The rapid but stable repositioning produces a true throttling action.

货号	连接尺寸	连接方式	描述	操作压力	工作压力	维修包
铸铁材质
A1204	1"	SCRD	112 SGT BP-NV	125	175	R1820
A1205	2"	SCRD	212 SGT BP-NV	125	175	R0101
A1206	2"	FLGD	212 FGT BP-NV	125	175	R0101
A1207	2"	GRVD	212 GGT BP-NV	125	175	R0101
A1208	3"	SCRD	312 SGT BP-NV	125	175	R0102
A1209	3"	FLGD	312 FGT BP-NV	125	175	R0102
A1210	4"	SCRD	412 SGT BP-NV	125	175	R0103
A1211	4"	FLGD	412 FGT BP-NV	125	175	R0103
A1212	6"	FLGD	612 FGT BP-NV	125	175	R0104
球墨铸铁材质
A1204-D	1"	SCRD	130 SGT BP-NV-D	300	300	R1821
A1205-D	2"	SCRD	230 SGT BP-NV-D	300	300	R0407
A1206-D	2"	FLGD	230 FGT BP-NV-D	300	300	R0407
A1207-D	2"	GRVD	230 GGT BP-NV-D	300	300	R0407
A1208-D	3"	SCRD	330 SGT BP-NV-D	300	300	R0408
A1209-D	3"	FLGD	330 FGT BP-NV-D	300	300	R0408
A1210-D	4"	SCRD	430 SGT BP-NV-D	300	300	R0409
A1211-D	4"	FLGD	430 FGT BP-NV-D	300	300	R0409
A1212-D	6"	FLGD	630 FGT BP-NV-D	300	300	R0110

产品简介

详细介绍