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403 Series Pressure Regulating Valve
Brand: Watson McDanielThe 403 Series pilot-operated (piston-actuated) pressure regulating valves are used for pressure reduction on steam mains and other process equipment. Pilot-operated regulators will maintain a constant and accurate downstream pressure regardless of fluctuations in supply pressure or usage.
These regulators can be supplied with an optional internal sensing line which simplifies installation. Piston-actuated regulators are more compact than Diaphragm-actuated regulators.
The 403 Series contains all stainless steel internals for high-pressure applications psi: 0 to 400 (kPa: 0 to 2,758, bar: 0 to 27.58). The Double-Spring option is available for a wider range of reduced pressures.
Features- Pilot-operated regulators minimize outlet pressure fluctuations even when load varies
- Internal Sensing option (If requested, the regulator can be modified to internally sense pressure, eliminating the need for an external sensing line)
- Ductile Iron body to handle increased pressure and temperature
- Hardened stainless steel seat and disc (55 Rc)
Specifications
Brand
Enclosure, Body Material
- Ductile Iron
Flange Size - 2-1/2” (DN 65)
- 2-1/2” (DN 65) - 150#
- 2-1/2” (DN 65) - 300#
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150#
- 2” (DN 50) - 300#
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150#
- 3” (DN 80) - 300#
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150#
- 4” (DN 100) - 300#
NPT Connection
- 1” NPT
- 1/2” NPT
- 1-1/2” NPT
- 1-1/4” NPT
- 2” NPT
- 2-1/2” NPT
- 3” NPT
- 3/4” NPT
- 4” NPT