Product Description
Company Info
Product Description
The Twin Seal Valve is a non-Iubricated, resilient seal, plug-type valve which
Has a mechanical means of freeing the plug before it is rotated from the closed to the open position, In opening the valve, the plug is raised, thus retracting the seating segments or slips through their tapered dovetail connections. Only after the slips afe
Fully retracted perpendicularly from the body seat is the plug rotated to the open position.
Conversely, in closing the valve, the plug and slips are rotated freely, wigh no seal-to-body contact, until the slips are positioned over the ports. Then the plug is driven down between the slips and the tapered surfaces wedge oug the slips for a positive upstream as well As downstream shut-off. For maximun Upstream sealing, it is important to torque the valve closed do not back off. Do not use cheaters.
Thesmall Twin Seal Valves are handwheel operated, and require up to 3 turns to open or close. Up to 23/4 turns expand or retract the slips, while? Turn rotates the plug. Large valves operate in a similar manner, except that they have enclosed weather-proof worm gearing.
At the top of the valve, a position indicator flag shows the exact plug position indicator flag shows the exact plug position. It appears in line with the flow when the valve is open, and perpendicular to the flow when the valve is closed. Where Twin Seal Valves are used for double block and bleed service, a manual body bleed valve is required to check seal integrity of the valve in the closed position.
Since Twin Seal valves hold bubble-tight. In liquid service, it is important to prevent trapped body pressure form exceeding the working pressure of the valve. Automatic bleed valve system or thermal relief systems are recommended to prevent pressure buid up in the body cavity.
Has a mechanical means of freeing the plug before it is rotated from the closed to the open position, In opening the valve, the plug is raised, thus retracting the seating segments or slips through their tapered dovetail connections. Only after the slips afe
Fully retracted perpendicularly from the body seat is the plug rotated to the open position.
Conversely, in closing the valve, the plug and slips are rotated freely, wigh no seal-to-body contact, until the slips are positioned over the ports. Then the plug is driven down between the slips and the tapered surfaces wedge oug the slips for a positive upstream as well As downstream shut-off. For maximun Upstream sealing, it is important to torque the valve closed do not back off. Do not use cheaters.
Thesmall Twin Seal Valves are handwheel operated, and require up to 3 turns to open or close. Up to 23/4 turns expand or retract the slips, while? Turn rotates the plug. Large valves operate in a similar manner, except that they have enclosed weather-proof worm gearing.
At the top of the valve, a position indicator flag shows the exact plug position indicator flag shows the exact plug position. It appears in line with the flow when the valve is open, and perpendicular to the flow when the valve is closed. Where Twin Seal Valves are used for double block and bleed service, a manual body bleed valve is required to check seal integrity of the valve in the closed position.
Since Twin Seal valves hold bubble-tight. In liquid service, it is important to prevent trapped body pressure form exceeding the working pressure of the valve. Automatic bleed valve system or thermal relief systems are recommended to prevent pressure buid up in the body cavity.
Address:
No. 77, Dingye Road, Jinshan Industrial Zone, Shanghai, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components
Main Products:
Valve, Cryogenic Valve, Ball Valve, Special Valve, Gate Valve, API 6d Valve, Butterfly Valve, Check Valve, Plug Valve, Globe Valve
Company Introduction:
SANBORA Valve Co., Ltd, one of proffessinal company for ball valve\ Special valve manufactory company in China which products are widely in the industrial pipelines of petroleum, and we offer you:
Type: API6D: Gate, Globe, Check, Ball, Plug and Butterfly valve etc,
Special valve: Anti-coking four ways ball valve\hydrogen compressor ball valve\Obit ball vavle\Electricity ball valve\24-way molecular sieves valve\ PTA special valve \ Melt over valve\Bellows globe valve etc,
Size: From 1/2" to 56"(DN15--DN1400);
Class rating: From 150Lbs to 2500Lbs (PN16--PN420);
Material range: From Carbon steel, alloy steel, stainless steel, Super-duplex stainless steel and special alloy steel like Monel, Inconel, PIA;
Working temperature: From -196 centidegree to 650 centidegree.
We have exported our business in 15 courtries and districts, mainly in Europe, North America, South Asia, Russia and awe wonder whether we′d be able to have the opportunnity to work together with you with our professional experience, with reasonalbe price, good quality and delivery.
Type: API6D: Gate, Globe, Check, Ball, Plug and Butterfly valve etc,
Special valve: Anti-coking four ways ball valve\hydrogen compressor ball valve\Obit ball vavle\Electricity ball valve\24-way molecular sieves valve\ PTA special valve \ Melt over valve\Bellows globe valve etc,
Size: From 1/2" to 56"(DN15--DN1400);
Class rating: From 150Lbs to 2500Lbs (PN16--PN420);
Material range: From Carbon steel, alloy steel, stainless steel, Super-duplex stainless steel and special alloy steel like Monel, Inconel, PIA;
Working temperature: From -196 centidegree to 650 centidegree.
We have exported our business in 15 courtries and districts, mainly in Europe, North America, South Asia, Russia and awe wonder whether we′d be able to have the opportunnity to work together with you with our professional experience, with reasonalbe price, good quality and delivery.
