Description
CLA-VAL Fire Protection Pressure Relief 2050B, 4″, Class 150 – 250 PSI Max – DB-2050B1145-C
The Cla-Val Model 50B-4KG1 Globe / 2050B-4KG1 Angle Pressure Relief Valve is designed specifically to automatically relieve excess pressure in fire protection pumping systems. Pilot controlled, it maintains constant system pressure at the pump discharge within very close limits as demands change. The 50B-4KG1 and 2050B-4KG1 can be supplied with optional internal and external epoxy coating of the main valve wetted surfaces. On ductile iron valves, epoxy coating is standard.
- Factory Mutual Approved
- Fast Opening to Maintain Steady Line Pressure
- Accommodates Wide Range of Flow Rates
- Closes Gradually for Surge-Free Operation
- Adjustable Pressure Settings, Not Affected by Pressure At Valve Discharge
- Now Available in Grooved Ends Sizes 3″-6″
- UL / ULC Listed
Specifications
| Model | 2050B |
| Sizes | Globe: 3″ – 8″ flanged or grooved |
| Angle: 3″ – 8″ flanged | |
| Angle: 3″ – 6″ grooved | |
| End Details | 150, 300 ANSI B16.42 and Grooved Ends |
| Pressure Rating | Class 150 (250 psi Max) |
| Class 300 (300 psi Max) | |
| Water, to 180°F Max. | |
| Main Valve Body & Cover | Ductile Iron ASTM A536 Grade 65-45-12 |
| Standard Main Valve Trim | Stainless Steel Seat |
| Stainless Steel Dura-Kleen Stem | |
| Standard Pilot Control System | Cast Bronze with Stainless Steel Trim |
| Adjustment Range | 20-200 psi (150 Class) |
| 100-300 psi (300 Class) |
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