Double Expanding Gate Valve Pdf

Petrolvalves double expanding gate design permits full operability in any service and design condition. 300 gate valve after 500 cycles the measurement result was less than 50 ppm. Single and double expanding gate valves.

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Med expanding gate valves are manufactured with a full bore port and with 2 piece gate segment obturator designed for a positive bubble tight shut off upstream and downstream under both low and high differential pressure.

Double expanding gate valve pdf. Gate valves are designed to meet requirements of. Through conduit gate valves to api 6d and api 6a. Bolted bonnet pressure seal and cryogenic designs are available. The gate female wedge is driven by the stem and a centralizer mechanism guide helps in retaining the gate segment assembly until sealing through expansion is required.

Consisting of a gate and a second segment male and female wedge segment. Expanding gate valve makes it ideal for critical double block and bleed applications. Double expanding gate valves are made by two sliding pieces. Double block and bleed capability and high robustness are standard feature of this seat design.

Parallel slide gate valves. The expanding gate provides high sealing forces between the gate and seat faces of both the upstream and downstream seats. Our gate valves program includes. The valve types include gate globe swing check bolted bonnet pressure seal bonnet ball floating trunnion rising stem thru conduit gate slab and expanding swing check full and regular port lubricated plugs dual plate checks wafer and lug.

Standard gate valves. Emissions after 500 cycles at ambient and 350 f issued by yarmouth research and technology lab for 8 inch class 300 gate valve after 500 cycles the measurement result was less than 50 ppm. In addition the unique dual seal element elastomer and plastic design embedded in the metal seat insures sealing at. Valvesgate expanding through conduit gate valves 610 917 952 953 928 05 the driving mechanism of the gate is designed to guarantee full bi directional performance of the valve.

The actual product may vary slightly from shown due to engineering approved variation. This video explains the principle of operation for orion s expanding gate valve. Solid wedge flexible wedge and split wedge. Valveworks usa model mds expanding gate valve operation explained.

Including carbon steel stainless steel exotic alloys. Our expanding plug valve has a relief system port located on the upper section of the valve body eliminating any need to disassemble the relief system to remove the valve bonnet while the lower trunnion of the valve is an integral part of the lower bonnet and is not part of the plug. Emissions after 500 cycles at ambient and 350 f.