1/2" FORGED STEEL GATE VALVE 800# WB NPT TRIM 8

Forged Steel Gate Valves are typically designed with a bolted or welded bonnet, solid wedge gate, and a rising stem with an OS&Y (Outside Screw and Yoke) design. These valves are used for on/off flow control in pipelines and are known for their tight sealing capabilities. Gate valves are bi-directional valves ideally suited for on-off duties. OMB produces various types both with parallel face gates or with wedge gates. These valves have a very low resistance to flow, which in the case of parallel gate valves approaches that of a straight pipe. They are used for duties with high pressure fluids due to the fact that upstream pressure helps the sealing between gate and seat. OMB valves are manufactured in a wide range of materials, supplied by the best available steel mills, forged by well known forgery with outstanding equipment and experience. All the material can be certified in the chemical composition and the mechanical characteristic. End connections include flanged, socket weld, butt-weld, screwed, screwed by butt weld and screwed by socket weld in sizes 15mm to 50mm and pressure classes 150# – 2500#. Shell Approved MESC and NACE specification valves.

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BODY AND BONNET MATERIALS- OMB valves are manufactured in a wide range of materials, supplied by the best available steel mills, forged by well known forgery with outstanding equipment and experience. All the material can be certified in the chemical composition and the mechanical characteristic.
BOLTS MATERIALS- The following tables suggest standard combination of body and bonnet materials and trim (stem, disc or wedge, seat) composition. Different combinations are available uppon request.
PACKING AND GASKET- Asbestos-free packing is composed by a series of rings of pure graphite. The sets is closed with two rings, top and bottom, anti-extrusion, manufactured in braided graphite. Both internal and external rings are treaded with corrosion inhibitor.
Asbestos-free gaskets used on bolted bonnet valves are of the spiral-wound type in Stainless Steel 316 and pure graphite. On class 1500 valves, ring-joint gaskets in accordance with ANSI B16.20 - API 6A can be used.