Double Expansion Gate Valve

Double block and bleed capability and high robustness are standard feature of this seat design. 60 years of worldwide service in oil gas chemicals water slurry and multiproduct applications has established the wkm pow r seal expanding gate valve as one of the most trusted gate valves especially where safety and seal reliability are critical. Rays through conduit double 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.

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Gate valves either stops or allows flow through the valve and acts somewhat like the opening or closing of a gate and is called appropriately the gate valve.

Double expansion gate valve.

The benefits include an overall cost size and weight reduction in addition to an ability to configure the valve to seal. The gate is also shown as a wedge due to the shape is resembles. Double expanding gate valve manufacturers directory find 28 double expanding gate valve from double expanding gate valve online wholesalers for your sourcing needs from china. The double expanding gate valve is equipped with a two segment gate.

When the valve is open the closure member is fully drawn up into. Vatac 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 valves are made by two sliding pieces consisting of a gate and a second segment male and female wedge segment. Double expanding gate valve.

In a high temperature application over 700 f the double flapgate valve s housing gates and seats can be made of stainless steel to provide a longer service life. Each segment is machined with a double slope a male and a female. Bel valves through conduit expanding gate valve enables double block and bleed dbb functionality to be achieved within one single valve assembly as opposed to the two conventional slab gates that would otherwise be required. While thermal expansion and contraction can weaken the seal between a rotary airlock valve s rotating metal parts a double flapgate valve s few moving parts ensure a strong.

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. The slopes are designed to cause the expansion of the gate in both open and closed positions with the valve closed the gate provides a double barrier with the valve open a full bore conduit is isolated from.