Unloading valve
DN 15 - 100, 0.6 - 4 MPa Zhejiang Weidouli Valves Manufacturing Co., Ltd.

Design Standard: GB, JB, API, ANSI, ISO, BS, DIN, NF, JIS, etc.

Feature: Dump valves are fitted to the engines of turbo charged cars and sit between the turbo outlet

and the throttle body. When transitioning from a boosted state to a closed throttle state (as in between shifts),

due to inertia, the turbo continues to pressurize air, but the closed throttle prevents the compressed air from

entering the engine. In this case the pressure exceeds the preset spring pressure in the dump valve and the

excess pressure is bled off to atmosphere.

Pressure rating: PN0.6MPa~PN4.0MPa, Class150~300

Diameter size: DN15~100mm, NPS1/2"~4"

Temperature: -29℃~ +425℃

Material range:

◆Titanium: TA1, TA2, TA10, TC4, Gr2, Gr3, Gr5

◆Nickel: N6、N201、N200、CZ-100

◆Hastelloy alloy: Hastelloy B（N-12MV、N-7M）, Hastelloy C（CW-12MW）

Hastelloy C276（CW-6MC）, Hastelloy C4, Hastelloy G30

◆Monel alloy: M-30C、M35-1, Monel 400, Monel 600, Monel K500

◆Inconel: Inconel 600, Inconel 800, Inconel 690

◆Duplex steel : S31803(SAF2205,F51),S32750(SAF2507,F53)

◆Zirconium: Zirconium 702, Zirconium 705

◆Austenitic Stainless steel: 1.4529、904L、254SMO、654SMO

◆Stainless steel: 304、304L、316、316L、317L、310S

◆Other: NS143/Alloy 20, C4