Regulating Valves
Price range: $1,502.51 through $4,111.31
The 455 Series is a direct-operated pressure regulating valve designed to reduce pressure in steam and liquid systems. It provides accurate pressure control with a simple, rugged design and requires only a 5 PSIG minimum inlet pressure.
455 Series — Pressure Regulating Valve for Steam, Water, Other Liquids & Gases
The 455 Series is a direct-operated pressure regulating valve designed to reduce pressure in steam and liquid systems. It offers reliable downstream pressure control with a simple, rugged design suitable for a wide range of industrial applications.
Material Specifications
| Body | Bronze (small sizes) / Cast Iron (large sizes) |
| Diaphragm | Stainless Steel |
| Seat | Stainless Steel |
Technical Specifications
| Service | Steam, Water, Other Liquids & Gases |
| Available Sizes | 1/4" – 3" |
| Connection | NPT, Flanged |
| Maximum Inlet Pressure | 300 PSIG |
| Reduced Pressure Ranges | Multiple ranges from 1–10 up to 75–300 PSIG |
Operating Principles
Downstream pressure acts on a spring-loaded diaphragm to modulate the valve position. As downstream pressure increases, the valve closes proportionally to maintain the set pressure. As demand increases and downstream pressure drops, the valve opens to supply more flow.
Available Models
| Size | Model Series |
| 1/4" – 1/2" NPT | 455-12 models with ranges 1–10 through 75–300 PSIG |
| 3/4" NPT | 455-13 models |
| 1" NPT | 455-14 models |
| 1-1/4" – 2" NPT | 455-15 through 455-17 models |
| 2-1/2" – 3" FLG | 455-18/19 flanged models |
Applications
- Steam pressure reduction
- Water and liquid pressure regulation
- Compressed gas systems
- HVAC and process heating
- Industrial and commercial 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 |
| Pressure Rating | Series Pressure Regulating Valve for 1/2 to 1-1/2 STEAM Applications by, Series Pressure Regulating Valve for 2 to 4 STEAM Applications by, W Series Pressure Regulating Valve for 1/2 to 1-1/2 WATER Applications by, W Series Pressure Regulating Valve for 2 to 4 WATER Applications by |
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