R-Series Relief & Back Pressure Regulating Valve for Water-Oil -Other Liquids
Price range: $216.75 through $1,964.62
The R-Series Back Pressure & Relief Valves are designed to maintain upstream pressure in various process applications.
R-Series — Relief & Back Pressure Regulating Valve for Water, Oil & Other Liquids
The R-Series Back Pressure & Relief Valves are designed to maintain upstream pressure in various process applications. They automatically relieve excess pressure by diverting flow back to a tank or to a lower-pressure return line. These valves are ideal for pump bypass applications where constant pump discharge pressure must be maintained.
Note: Not to be used as an emergency or safety relief valve. NOT TO BE USED ON STEAM.
Product Overview
- Maintains constant upstream pressure by relieving excess pressure
- Suitable for Water, Oil, and Other Liquid applications
- Excellent for pump bypass applications
- Provides reliable pressure control under varying flow conditions
- Not designed for steam service
Material Specifications
| Body | Bronze |
| Disc (1/2" – 1-1/2") | Stainless Steel |
| Disc (2" – 3") | Bronze |
Technical Specifications
| Available Sizes | 1/2" – 3" |
| Connection | Threaded, NPT |
| Maximum Inlet Pressure | 300 PSIG |
Options & Notes
Factory Setting of Relief Pressure Option: Add desired factory-set pressure to the end of the model code. List Adder: $100.00. Example Model Code with Set Pressure Option: R-12-N-2, Set at 50 PSIG.
Available Models
| Size / Connection | Model Code |
| 1/2" NPT | R-12-N-4 (1–6 PSIG), R-12-N-3 (5–35), R-12-N-2 (25–100), R-12-N-1 (75–300) |
| 3/4" NPT | R-13-N-4 (1–6 PSIG), R-13-N-3 (5–35), R-13-N-2 (25–100), R-13-N-1 (75–300) |
| 1" NPT | R-14-N-4 (1–6 PSIG), R-14-N-3 (5–35), R-14-N-2 (25–100), R-14-N-1 (75–300) |
| 1-1/4" NPT | R-15-N-4 (1–6 PSIG), R-15-N-3 (5–35), R-15-N-2 (25–100), R-15-N-1 (75–300) |
| 1-1/2" NPT | R-16-N-4 (1–6 PSIG), R-16-N-3 (5–35), R-16-N-2 (25–100), R-16-N-1 (75–300) |
| 2" NPT | R-17-N-4 (1–6 PSIG), R-17-N-3 (5–35), R-17-N-2 (25–100), R-17-N-1 (75–300) |
| 3" NPT | R-19-N-2 (25–100), R-19-N-1 (75–300) |
Applications
- Pump bypass systems
- Water treatment and distribution
- Industrial process pressure control
- Oil and liquid handling systems
Note: We will contact you during order fulfilment to discuss shipping and handling costs for products weighing more than 150 pounds. These costs will be billed separately.
| Weight | N/A |
|---|---|
| Brand | Watson McDaniel |
| Configuration | 1-1/2# By, 1-1/4# By, 1/2# By, 1# By, 2# By, 3/4# By, 3# By |
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