Custom Size Pressure Seal Gate Valve , Forged Gate Valve On Off Type

Gate valves
gate valves are normally used for on-off service. They are not recommended for throttling service.

Gate valves are normally installed in horizontal pipe runs with the valve stem vertically up. They can also be installed in vertical or horizontal pipe runs with the valve stem other than vertical, but special construction may be required depending on valve size, service conditions and material. When purchasing valves for other than the normal installation, valve orientation should be specified when consulting the factory.

After closing a gate valve with sufficient force to develop shutoff, the stem should be backed off slightly (1/8 to 1/4 turn) to relieve stem load. This will enable the stem to expand slightly without bending or damaging the valve and will not affect valve shutoff.

Gate valves are offered in two designs: Parallel Disc and Flexible Wedge. Parallel Disc are position seated; Flexible Wedge are torque seated when closing.

Design Features:

• Outside Screw and Yoke(OS&Y)
• Two Piece self aligning packing gland
• Bolted bonnet with spiral-wound gasket or Weld bonnet
• Integral backseat

Optional Features:

• Forged Carbon, Stainless or Alloy Steel Materials
• Full Port option available for classes 150 - 2500
• Extended Stem or Below Seal
• Flanged, Threaded or Socket Weld Ends
• Available in all trim configurations
• Welded Bonnet or Pressure Seal Bonnet
• Locking Device upon request
• Manufacturing to NACE MR0175 upon request

Material Selection for Globe Valves:

• Carbon Steel (A105)
• Low Temperture Carbon Steel (LF2)
• Stainless Steel (SS304, SS304L, SS316, SS316L, SS347, 904L)
• Low Alloys (F1, F11, F22)
• High Alloys (F5, F9,F91, F62, F20 )
• Duplex & Super Duplex (2205, 2507, S32760)
• Bronze (C95800, C95500, C95400)
• Inconel (Inconel 625, Inconel 825)

Remarks: The above materials are applicable to valve body. Contact JIEYU for the valve component material.