- Excellent low flow stability
- Ensures minimum upstream pressure
- Easily and precisely set downstream pressure
- Based on 106-PG and 206-PG main valves
- Pilot valve senses downstream pressure at valve outlet and modulates the pressure above the diaphragm to regulate downstream pressure
- Should high demand cause the inlet pressure to fall to the minimum set point, the upstream pressure has priority and the valve will modulate to to prevent the upstream pressure from dropping below the set-point.
- The valve shall be a Singer Valve model 106-PR-R / 206-PR-R, size “_____”, ANSI Class 150 (ANSI 300, ANSI flanges drilled to ISO PN 10 / 16 / 25 or 40) pressure rating / flange standard, globe (angle), style valve. The Model 160 Pressure Reducing Pilot (Normally Open Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar.
- The Model 81-RP Pressure Relief Pilot (Normally Closed Pilot) spring range shall be “___ to ___” psi / “___ to ___” bar, with set-point preset at Singer Valve to “___” psi / “___” bar. Assembly shall be according to Schematic A-0332C.
- The valve shall maintain relatively accurate control of the downstream pressure regardless of fluctuation in flow or upstream pressure until the upstream pressure drops to a pre-determined value.
- The sustaining pilot shall override the pressure reducing function at such time as the upstream pressure drops to the pre-determined value maintaining relatively steady upstream pressure.
- Refer to Main Valve section, page 11, 106-PG or 206-PG for detailed information pertaining to valve sizes and materials, selection criteria and specifications.
- Refer to Pilot and Accessories, page 249, section, Model 160 Pressure Reducing Pilot (Normally Open Pilot), Model 81-RP Pressure Relief Pilot (Normally Closed Pilot) and Model 26 Flow Stabilizer for detailed information pertaining to materials and specifications.
Download the 106 / 206-PR-R Product Guide.
Download the 106 / 206-PR-R Operations Guide.
Singer Operation, Troubleshooting Charts, Lifting Instructions
Singer Interactive Valves in Action Learning App