Reduced pressure zone assembly (Backflow preventer RP type) is an assembly of two check modules equipped with an relief valve. With fail-safe design, it is used in high hazard condition to fully prevent backflow and protect the potable water.
Available size (Source 1 with UL/FM)
| Size | Configuration | Connection | Working pressure (psi) | Ref. No. |
|---|---|---|---|---|
| 2 1/2″ / DN65 | DC + IGB | GxG | 175 | V7201 (UL/FM) |
| 3″ / DN80 | DC + IGB | GxG | 175 | V7202 (UL/FM) |
| 4″ / DN100 | DC + IGB | GxG | 175 | V7203 (UL/FM) |
| 6″ / DN150 | DC + IGB | GxG | 175 | V7204 (UL/FM) |
| 8″ / DN200 | DC + IGB | GxG | 175 | V7205 (UL/FM) |
| 2 1/2″ / DN65 | DC + OSY | FxF | 175 | V7206 (UL/FM) |
| 3″ / DN80 | DC + OSY | FxF | 175 | V7207 (UL/FM) |
| 4″ / DN100 | DC + OSY | FxF | 175 | V7208 (UL/FM) |
| 6″ / DN150 | DC + OSY | FxF | 175 | V7209 (UL/FM) |
| 8″ / DN200 | DC + OSY | FxF | 175 | V7210 (UL/FM) |
| 10″ / DN250 | DC + OSY | FxF | 175 | V7211 (UL/FM) |
Note:
1. DC + IBG means double check modules and two integral grooved butterfly valves. And it is also available with flanged connection through an extra flange adapter, to match ANSI B16.1 Class 125.
2. DC + OSY means double check modules and two OSY gate valves with flanged connection as ANSI B16.1 Class 125.
Available size (Source 2 with UL)
| Size | Configuration | Connection | Working pressure (psi) | Ref. No. |
|---|---|---|---|---|
| 3″ / DN80 | DC + OSY | FxF, GxG, FxG | 175 | V7221 (UL) |
| 4″ / DN100 | DC + OSY | FxF, GxG, FxG | 175 | V7222 (UL) |
| 6″ / DN150 | DC + OSY | FxF, GxG, FxG | 175 | V7223 (UL) |
| 8″ / DN200 | DC + OSY | FxF, GxG, FxG | 175 | V7224 (UL) |
Note:
1. DC + OSY means double check modules and two OSY gate valves with multiple ends types by FxF, GxG, FxG.
2. The material of check module assembly is ductile iron, not SS304.
Email us at info@tpmcsteel.com or use the form below. Normally you will be replied within 2 hours during support hours.
