Flanged End Pressure Seal Gate Valve

Technical Standard

Forged Steel Gate Valves are suitable for using on various kinds of pipeline cut off or connect the flowing of medium. By using different material, the valves could be suitable for medium such as water, steam, oil, nitric acid, acetic acid, oxidizing substance, carbamide and etc. Molded flexible graphite is used for packing of Female Threaded Gate Valve. PTFE or combined packing material can be also used if being requested by the customer. The internal surface of the stuffing box, of which area is contacted with the packing, is of excellent finish (Ra 3.2μm). The stem surface, contacting with the packing, should be rolled and pressed after being precisely machined, so as to reach to the high finish and compactness (Ra 0.8μm) and ensure the reliable tightness of the stem area.

1/2"- 2", DN15 - DN50, Butt-Weld and Flange.
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Working principle:

Flange high - temperature and high - pressure globe valve adopts self - sealing structure in the middle chamber, sealing performance is good.The two ends of the branch pipe are welded structure.The sealing surface of valve disc and valve seat is made of stellite cobalt-base hard alloy surfacing welding, with good abrasion resistance, high temperature resistance and abrasion resistance.The stem is tempered and surface nitrogenated.Bonnet stuffing box depth reasonable packing and corrosion inhibitor seal reliable.The valve has an inverted seal structure to ensure that the valve does not leak through the stem when open for operation.Widely used in petroleum, chemical, natural gas, metallurgy, chemical fiber, paper, urban construction, and other fields.

Flange forged steel globe valve features:

1, valve and pipeline connection using welding structure.

2, sealing surface is not easy to wear, abrasion, good sealing performance, long life.

3, compact structure, good opening and closing, small height, easy maintenance.

4, suitable for water, steam, oil quality pipeline, with high temperature resistance, high pressure resistance characteristics