needle valve.jpg
"A needle valve features a small aperture with a long, tapered seat and a needle-shaped plunger attached to the end of a screw that fits exactly into this seat.
Materials: Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel Etc.
Specification:
- Design – ASME B16.34
- Face to Face – ASME B16.10
- End Connection – ASME B16.25 & ASME B1.20.1
- Test – API598
- Special – NACE MR-01-75"