Pressure Seal Gate Valve

Product Description

We are offering best in quality and durable Pressure Seal Gate Valves that is employed to control the flow of liquids and gases. Owing to its accurate design, and optimum performance, incorporation of this equipment in the industries results in improved fluid processing. Furthermore, it is suitable to use for the abrasive fluids, and active chemicals as the disc of the valve are made of the first rate metallic alloy that is highly restrictive to the corrosion and oxidization. Besides, This Pressure Seal Gate Valves is ready to dispatch at our well-developed warehouses.  

  USMANI VALVE Pressure Seal Gate Valve Design Features:

• Flexible Wedge for improved seating and ease of operation, especially in high temperature service. Wedges are accurately guided thru the entire stroke.
• Powell pressure seal valves are full port design per ASME B16.34 Table A-1.
• Standard trim is stellite faced seat and disc seat surfaces, and 13% chrome stem (API trim Other trims available on request.
• Seat faces lapped for smooth finish and superior sealing.
• Pressure seal valve stems are non-rotating with surface finish to maximize packing seal for low fugitive emissions.
• Pressure seal valve yoke arms designed for ease of gear, motor or cylinder actuator adaptation

MATERIALS

BODY: Carbon steel, Stainless steel, Low temperature carbon steel, Duplex, Special Alloys,Other materials under request TRIM: 316, 410, MONEL, Other materials under request

Valves Design :

• ASME B16.5ASME B16.5
• ASME B16.10& ISO 5752

Pressure Testing : API 598

Pressure seal bonnet, flexible wedge (solid) OS&Y rising stem. Asbestos Free

Body and Bonnet

All USMANI ( UTVC Make ) gate and globe valves have backseat threaded in the bonnet, or for the pressure seal valves, welded to the bonnet. Into pressure seal the hard facing is stellite 6 or equivalent.

Stem

• The design of the body-bonnet/gaskets varies depending on the class of the valve. 
• Class 150 gate valves consist of a square joint in 2" to 12" and an oval one for all other sizes. Depending on the valve service it can be supplied flat-face gasket with graphite or PTFE.
• Class 300 and 600 valves consist of a circular spiral wound gasket.
• Class 900 ,1500,2500# and above gate valves consist of a ring type joint. 
• In pressure seal designs the sealing is achieved through a gasket that takes advantage of the internal pressure of the line. The material most commonly used is high-purity graphite being located between the body and the body retainer ring.

Flexible Wedge

All USMANI ( UTVC Make ) gate valves 3" and above valves feature a flexible wedge unless otherwise specified by the customer. The flexible wedge shifts along the body of the valve during opening and closing, being held in position by a guide slot that minimizes the friction between body seat and wedge. This design is especially suited to compensate slight thermal deformations produced by the pipe or the valve itself safeguarding a better sealing between body and wedge seats