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.
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.
| 貨號 | 連接尺寸 | 連接方式 | 描述 | 操作壓力 | 工作壓力 | 維修包 |
| 鑄鐵材質 | ||||||
| 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 |
| 球墨鑄鐵材質 | ||||||
| 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 |
