Pressure Reducing Valve DP143

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Note

Three colour coded pressure adjustment springs are available for the following downstream pressure ranges:
Pressure Reducing Valve DP143
Red: 0.5 Bar to 2 Bar
Blue: 2 Bar to 10 Bar
Yellow:-10 Bar to 25 Bar or 40 Bar

Pressure Reducing Valve DP143 general situation

The DREAMAX pressure reducing valve DP143 is a self-powered, pilot-operated (externally piloted). Its self-acting operation eliminates the cost of an external power source. It constructed of carbon steel, suitable for steam, air or industrial gases. The DP143 will accurately control downstream pressure, regardless of the upstream pressure, or load variations.

The DP143 offers a wide range of control options. Color coded, interchangeable springs allow quick and easy change of downstream pressure range eliminating the need to isolate the valve or break the steam line. Downstream pressure is sensed either internally or through an external sensing pipe.

These are recommended for medium duty or process type applications, branch lines to OEM equipment, for accurate process control or where an external interface or remote adjustment is required. Typical applications include main line pressure reduction or where high accuracy of control is required. It combines high accurate control with increased resilience to harsh operating environments, easier servicing and simpler selection. This versatile and compact valve will provide an efficient and economic solution in many pressure reduction applications.

Feature

1.Self-acting using spring and diaphragm operation - no need for electrical supplies.
2.Accurate control of pressure with choice of color coded springs.
3.Stainless steel internals for excellent durability and resistance to corrosion.
4.Wide range of screwed and flanged connections to match plant standards.
5.Fatigue tested diaphragm -no piston, no danger of sticking.
6.Extended valve life due to an externally accessible, easily replaced
pilot filter.
7.Easily serviced using off-the-shelf spares and standard tools.
8.Metal-to-metal seat

Performance Standard

1.Design & Manufacture standard as to: ASME PTC 25.3 / ASME B16.34
2.Face to Face dimension standard as to: MFR-STD
3.Flange dimension conforms as to: ASME B16.5 / BS EN 1092 Threaded Standard as to: NPT : ASME B1.20.1 BSP : ISO 7-2: 2000
4.Testing and inspection as to: API 598 / ASTM E 1008-2003
5.Pressure-temperature conforms as to: ASME B16.34
6.Anti Corrosion as per NACE MR-0175(2002) requirement

Technical Data

Technical Data
1. Size range: NPS 1/2" ~ 2"
2. Body design conditions: 150LB / 300LB / PN16 / PN25 / PN40
3. Maximum design pressure		300LB / PN40 : 50 Bar @ 40℃
		150LB / PN25 / PN16: 25 Bar @ 40℃
4. Maximum design temperature: 350℃@ 24 Bar
5. Minimum design temperature: -29℃
6.Outlet Pressure Range	300LB / PN40 : 0.5～40 Bar
	150LB / PN25 / PN16: 0.5～16 Bar
7. Maximum operating temperature: 325℃@ 24 Bar
8. Outlet pressure deviations: ≤±5%
9. Minimum pressure differential: 1.5 Bar
10. Suitable Medium: Suitable for steam and compressed air.

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