Needle Valve uses a tapered pin to gradually open a space for fine control of flow. The flow can be controlled and regulated with the use of a spindle. A needle valve has a relatively small orifice with a long, tapered seat, and a needle-shaped plunger on the end of a screw, which exactly fits the seat.
Series - PN16 - PN320
Needle valves are usually used in flow metering applications, especially when a constant, calibrated, low flow rate must be maintained for some time, such as the idle fuel flow in a carburetor.
Design Features
- Forchemical and industrial applications
- High quality investment casting body
- Pressure temperature rating: 1000 WOG pn63/450 deg. F
- 15% reinforced glassfibre Teflon seats
- Blow-out proof stem SS316
- 100% tested air- under water at 100 wog (6 bar) open & close position
Product Specifications
- Size 1/4″-1″ DN6-DN25
- Pressure Class "150, 300, 600, 900" | PN16-PN320
- End Connection NPT (M, F), BSPT (M, F), SW
- Body Material #20, 1Cr18Ni9Ti, SS304
- Disc Material SS316, A105
- Seat Material SS304, SS316
- Stem Material SS304, 2Cr13, 12CrMoV, SS316
- Design Standard GB/T 12224, JB/T 7747
- Face to Face Standard MFD
- Test Standard GB/T 13927
- Temperature Range -29℃~450℃
- Actuator Options Manual
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Structure Style
- Full Port, Globe Type
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Connection Standard
- ANSI B 16.5