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sealing surfaces and extending the valve life.

The protected seat-face design of double expanding and slab gate valves eliminates degradation of the seat face caused by debris in the process fluid, which makes them ideal for liquid service. Join our global family and become part of the company that’s leading innovation within the upstream oil and gas industry. The Calvary C1-EX cast-body Expanding Wedge Through-Conduit gate valves are designed for Our smaller 2- to 4-in nonrising stem version of the Pow-R-Seal API 6A expanding gate valve is commonly used in wellhead manifold systems because of its reliable mechanical seal and high pressure capability. Gate valves generally have one of four types of bonnets, which provide closure to prevent fluids from leaking out of the valve. We hate spam.

This ensures seal integrity at both high and low pressure. Reliability/Repeatability • Fire safe Design • Field repairable in line • External Thermal Body Relief • High-quality, through-conduit, expanding gate valves engineered for performance in critical isolation applications where a tight mechanical seal that is normally unaffected by pressure variations and vibrations is needed. Performing Together. Our patented single loaded-spring (SLS) stem seal design, used in Saf-T-Seal slab gate valves and WKM Pow-R-Seal double expanding gate valves, provides superior leak protection and a self-adjusting seal designed to reduce maintenance. We need a little more information from you before we can grant you access. The simple design of the Cameron RING-O subsea valve is ideally suited for integration into these systems and can be actuated manually, via ROV, or hydraulically for ease of operation.

Withstand the external pressure caused by the column of seawater at operating depths. Schlumberger Online Conference Working Together. Please provide specific location and contact information so we can expedite your request. Expanding Wedge Gate Valve Emergency Service is available 24 hours a day, seven days a week. Expanding Gate The expanding gate is field-replaceable and provides a tight mechanical seal that does not rely on line pressure. Nonrising stems are generally threaded into the upper part of the gate and have a pointer threaded onto the top to indicate position. You would choose an expanding gate valve when you need true double isolation and possible bleed as well in a single valve. Enhance technical reliability in pipeline transmission and storage applications. The valves are designed for parts to be field repairable in line. The expanding gate valve can be trimmed to meet most specifications that require handling a wide range of products and services. WKM Pow-R-Seal Double Expanding Gate Valve. An advantage of this fullbore design is very low friction loss, which saves energy and reduces total cost of ownership. Double expanding gate valves are made by two sliding pieces consisting of a gate and a second segment (male and female wedge segment). Screw-in bonnets are simple, durable sealing units that use pressure to seal. All Model C1-EX expanding gate valves are API 6D latest edition monogrammed equipment and are available in bore sizes ranging from 2” through 36”. In the power industry, NEWCO gate, globe, and check valves and DOUGLAS CHERO forged-steel gate, globe, and check valves are ideal for standard and critical applications, such as steam distribution in power plants. The extensions and adaptation for actuation are options regularly requested and provided. Union bonnets provide easy access to the valve body for applications that may require frequent maintenance or inspection. Nonrising stem designs are ideally suited for applications where vertical space is limited, in well applications, and where scraping or pigging is not required. Through-conduit and double block-and-bleed functionality. applications in ANSI 150 to 1500 Class operating pressures. This, in concert with the forged steel body, provides the highest integrity sealing available. Join us October 27. corrosive or erosive Pipeline service in oil and natural gas wellhead or other critical service When the valve is completely closed, the gate and segment are wedged … More information about cookies and your choice can be found in our Privacy Policy. There are four primary designs for gate valves. Our family of companies is organized to provide expert solutions, equipment, and operational support to optimize your drilling and production operations. Pressure classes: low (PN 10 and PN16 (bars), mostly PN6 or PN10 above 8 inches but commercially available up to PN16 (All these classes below ANSI 150) Join our members club to receive discounts, special pricing, and offers only available by signing up here. When additional protection is needed at points in pipeline applications where operational integrity is vital and the consequences of environmental exposure are higher, such as near waterways and municipalities, double expanding gate valves are a particularly wise choice.

During operation, the gate and segment retract from the seats before travel. Perform a flowline seal test simultaneously on both flow directions. 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 … Gate valves can have a rising or nonrising stem design. Standard offering for 5,000-psi [34.5-MPa] working pressure. This website would like to use cookies to store information on your computer which will help to customize your interactions with us and provide you with a better browser experience.

Thanks to the financial capital provided by our investors, we're able to continue developing innovative products and solutions to the oil and gas industry that lead a safer, more environmentally friendly future.

The extensions and adaptation for actuation are options regularly requested and provided. Soft sealing gate valves (flexible wedge gate valves) main group from DN40 (mm) up to most commonly used 250mm to 300mm (6-8inches) but readily avilable up to at least 1200mm.

These features resulting from the rugged design make it suitable for both common and more difficult applications throughout the energy industry. Manufactured and tested to API 6D and ANSIB16.34 specifications. When the valve is completely closed, the gate and segment are wedged tightly against each seat. Withstand temperatures up to 650 degF [343 degC]. Video WKM Pow-R-Seal Double Expanding Gate Valve One of the industry's most trusted gate valves. Our expanding gate valve is a full-bore, through-conduit gate valve featuring a mechanically sealing gate to ensure positive shutoff. Because of the diversity of construction materials, trim offerings, and design combinations available with gate valves, they are appropriate for a wide variety of applications. Outstanding sealing performance across a wide range of conditions. You may delete and block cookies from this site, but parts of the site may not function as a result. In contrast with a slab or expanding gate valve, wedge gate valves are not piggable because of the void that is left in the bottom of the valve body when the valve is open.

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