water sealed vacuum gate valve

Kurt J. Lesker Company | Vacuum Valves | Vacuum Science Is Our ...

Protection Gate Valve. The Protection Gate Valve's fast actionfeature, protects products that are “in-process” in the event of a vacuum pump failure. This bellows sealed, pneumatic actuated stainless steel valve with controller unit monitors up to four pumps with local or remote control and LCD status display.

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5/8 inch Gate Valve Valves Million Cycle Stainless ... - MDC Vacuum

Power Loss, Valve closes. Position Indicators, Mechanical, vernier adjustable, hinged-roller type micro switches suitable for 5A, 120/240 VAC. Vacuum. Range, 1x10-11 Torr. Leak Test, 2x10-10 cc/sec of He. Temperature Range Bakeability under vacuum in Open-Closed positions, with the following Bonnet-Gate Seal...

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Technical information | What is a vacuum valve?|IRIE KOKEN CO ...

A vacuum gate valve is required to have the function of isolating and sealing a vacuum and the atmosphere or vacuum spaces different in pressure for surface treatment of various substrates in vacuum equipment. In line with the recent ... (It is an image similar to turning of the tap while draining a bathtub filled with water.)...

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A minimum thickness gate valve with integrated ion optics for mass ...

(1.7 mm). The gate valve is able to maintain a vacuum of <10−10 mbar at the ICR cell when the source is vented to atmosphere and the estimated ion transfer efficiency is >95%. ... i.d.) used to form the seal between the blade and the body of the gate valve was purchased from McMaster-Carr (P/N 90025K348; Dayton, NJ).

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GNB | VT Vacuum Technologies

Circular Gate Valves: GNB round valves are fabricated from stainless steel or mild steel. Available in large sizes upto 72”. Options include: » Actuation: Pneumatic, Electric, Hydraulic, Manual; » Flanges: ASA, ISO, Conflat, Custom Designed; » Shaft Seal: Dual O-rings, Bellows; » Water Cooling: Flanges, Body, Gate; » Ports:...

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IVGTC - Cast Steel Gate Valve - Intervalve Poonawalla Ltd.

Our valves can be provided with special features like water sealed gland for vacuum service, bypass arrangements for pressure balancing, special cleaning for oxygen service, multi start spindle for low effort operation, extended spindle / bonnet for pit mounted / low temperature service & NACE compliant materials for sour...

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GNB Gate Valves - GNB KL Group

GNB round valves are fabricated from stainless steel or mild steel. Options include: Actuation: Pneumatic, Electric, Hydraulic, Manual; Flanges: ASA, ISO, Conflat, Custom Designed; Shaft Seal: Dual O-rings, Bellows; Water Cooling: Flanges, Body, Gate; Ports: Roughing, Gauge, View. Specification Chart/CAD Drawings...

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Water Cooled Vacuum Valves, Gate and Poppet Style

Protective Ring Valves for Dirty & Dusty Applications. • Protective Ring Keeps Dirt Out of Valve. • Aluminum, Stainless Steel or Mild Steel. • Water Cooled Port Flanges Available. • Radiation Shield for Gate is Optional. • Water Cooled Gate Described on Page 32. • Easy to Clean Dirt Sump Bonnet. • Helium Leak Rate Less...

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Hermetically sealed gate and globe bellows seal valves - Velan

globe, check, ball, butterfly and knife gate valves for critical applications in the ..... Acid (HF) Vinyl Chloride. Dowtherm. Nitrogen. Also for sour gas and oil, cryogenic and vacuum service. Class 2500 hermetically-sealed Y-pattern bellows sealed valves. ... Nitrogen bubble test under water. Spring rate test verifies force.

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Introduction to Valves - Bellows Sealed Valves - The bellow is a ...

Bellow(s) Seal(ed) Valves. In this article, the author Mr. Satish Chidrawar (at the bottom of this page you will find more about the author) first reviews the construction, design and operation of the bellow seal. He then provides various examples of where bellow seal Valves are use. Leakage at various points in pipelines...

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high and ultra-high vacuum for science research - Agilent

The cleaning procedure is similar to the small elastomer-sealed valves. Do not attempt to spray cleaning solutions or solvents into the valve body or port area while the valve is on the vacuum sys- tem. Serious pump or system contamination could result. Bellows Sealed Seing Gate Valve. Differential Pumping. Debris Is Kept...

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Stafjo knife-gate valves for the water and waste water industry

Oct 26, 2017 ... Stafsjö knife-gate valves specifically suited to the water and waste-water industries. ... Valves for the Waste Water and Water Treatment Industry: ... WB is as standard equipped with Stafsjö's unique box packing, TwinPack™, which gives a tight sealing where the gate exits the valve body and assures that no...

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GNB Full Catalog - GNB Corporation Vacuum Baffles and Accessories

O ring groove in the second flange. When ordering this valve, the GNB model number becomes the following... '5%4+26+10. Valve Type. A. Angle. G. Gate. GL ... Shaft Seal. B. Bellows. O. O ring. 26+105. P. Position indicator. R. Roughing port. WG. Water cooled gate. WB. Water cooled body. WF. Water cooled flange. BL.

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Series WAV - Henry Pratt Company

When air has been completely vented, water enters the valve causing the stainless steel float to rise and seal tightly against the seat to prevent leakage. Second, when the line is drained, either intentionally or as a result of power failure or pipeline breakage, the air vacuum valve responds to a negative pressure and opens,...

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MWEA Maintenance Committee Valves, Gates and Actuators

Isolation. • Direction check. • Throttling/control. • Air/vacuum relief. Valve Use. (in order). Page 7. • Gate. • Plug (sludge). • Knife gate. • Butterfly (cleaner water, air). • Ball (cleaner water and air). Isolation Valves. Page 8. • Globe valve. • Diaphragm (specialty valve). • Needle valve (packing / seal water). • Plug (sludge).

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Valves and fittings - vonRoll hydro

Shut-off valves. Gate valve with soft seal. Gate valves are shut-off valves in the "closed" or "completely open" switch position. Gate valves can be installed in almost all pipe networks for supplying water and gas, as well as in wastewater disposal systems. They can be used under pressure and in a vacuum. For the most part,...

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Gate Valves I Isolation Valves - Spartan Controls

Many options include materials, pressure/temperature ratings, shutoff classifications, and bonnet types, including standard or pressure seal bonnets. In addition to the ... Gate valves are used in anything from ½” manual isolation valves on a simple water application, up to 66” valves on main pipeline isolation applications.

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Kammerer Englisch - History - emil-kammerer

quick opening discharge valves for 4172°F (2300°C) hot molybdenum balls for a nuclear research centre; sluice systems for charge or discharge of solids at pressure or vacuum differentials; slide gate valves for the shut off of synthetic lacquers and resins; charge and discharge valves for tumble dryers with inflatable seals...

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PVC & CPVC GATE VALVES Performance ... - Aetna Plastics

valve from line. Convenient O-ring replacement kits provide for easy ordering, servicing and extended valve life. Sample Engineering Specifications ... valves shall be pressure rated at 235 psi for water at 73°F, as manufactured by Spears® Manufacturing Company. Vacuum Service. Spears® Gate Valves are tested at 26in.

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Sealing Materials Require a Careful Choice | Normandale ...

The choice of gasket materials for demountable seals is one of the many crucial decisions that are required in designing a vacuum system. .... where the valve operator and sealing mechanism is joined to the valve body, and the valve seal itself such as the nosepiece in a poppet design or the gate seal in a gate design.

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PVC & CPVC GATE VALVES Performance Engineered

valve from line. Convenient O-ring replacement kits provide for easy ordering, servicing and extended valve life. Sample Engineering Specifications ... valves shall be pressure rated at 235 psi for water at 73°F, as manufactured by Spears® Manufacturing Company. Vacuum Service. Spears® Gate Valves are tested at 26 in.

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GATE VALVE TYPE-P (PLUG) ROUND HANDLE [1 1/4-14inch](32 ...

Features. High Corrosion and Impact-resistance: All wet sections are made of corrosion-resistant material, thus preventing corrosion and turbid water due to rust, The GATE VALVE, made of high impact polyvinyl chloride, can be used for water supply and drainage. Light and Rugged Structure: Being made of synthetic resin,...

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US6325356B1 - Long life rotary gate valve for aircraft vacuum toilet ...

A light weight gate valve and method for a aircraft vacuum toilet system. The valve resists jamming due to scale buildup, thereby reducing maintenance costs associated with repair or cleaning. The gate valve is intended for mounting between two portions of a sewer pipe connected between a waste receiving bowl and a...

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How to Control Liquid Ring Vacuum Pumps

How to Control Liquid Ring. Vacuum Pumps. BY JOE ALIASSO. Liquid ring vacuum pumps are versatile machines because they can handle “wet” loads and can operate down to around 1”. HgA. ... A tubular glass gauge can be used for water or ... valve (usually a ball or gate valve) is required for maintenance. This will keep...

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Which Isolating Valve to Use? | Aveng Manufacturing

Enclosed below is a brief assessment of the best suited isolating valve for various pipeline functions. Pump Suction Isolation ... Gate valves are more suited as pump suction isolators because the full flow area of this design offers no resistance to flow thereby preventing turbulence in the suction pipe. A rising spindle gate...

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NEW Photo Showcase - Nor-Cal Products, Inc. - The Vacuum Experts

Serving the global needs of industry and research as a trusted source for standard and highly-configured ultra-high vacuum chambers and other components.

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Valve stem seal selection criteria - Flow Control

A lantern ring could be used in conjunction with compression packings for cooling the packing or acting as an injection chamber for a sealant or as a water sealing connection for vacuum service. Jacketed valves can be installed for cooling or heating. When a cooling medium is circulated, the jacketing is concentrated...

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Linear Gate Valves – EBARA Technologies, Inc.

Our linear gate valves have an ultra-slim profile, which makes them perfect for applications where space is limited, and their smaller volume results in lower ... Larger sizes have a unique feature in the actuator, which dampens the vibration, which can arise when the gate is opened. ... Elastomer Sealed; Copper Sealed...

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conflat manual valves, HVA CF Conflat 8.00 inch Gate Valve, 6.00 ...

CF Conflat HVA Manual Gate Valves PN KSB60M, Copper Bonnet Gasket and Viton Gate O-Ring for HVA CF Conflat 10 inch Gate Valve Manual, New Vacuum Pumps, New Dry Scroll Vacuum pUmps, Rebuilt Dry Scroll Pumps, New Mechanical Pumps, Used Mechanical Pumps, Used Vacuum Equipment, Rebuilt Ion...

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High Performance Valves | RFValves

Its products include the combination Anti-Shock Air Release and Vacuum Break Valves for sewage, slurry, tailings and water. ... INSAMCOR specializes in a variety of heavy-duty sealed design knife gate valves that provide world-class performance in abrasive, scaling, and corrosive slurries, sludge, liquids and bulk solids.

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New Vacuum Gate Valve, ISO Flange, Bellows Sealed, Stainless ...

Stainless steel standard gate valves are reliable, economical, general-purpose components for HV applications that require cleanliness and corrosion resistance. General purpose Electropolished Stainless Steel; Provide high conductance with a compact design; Shock free operation with minimum vibration; Available in...

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The Product Range. - Wey Valve

Jan 1, 2011 ... and vacuum. Reliable. Failurefree operation due to self flushing, fullbore passage. Designed for perfect flow pattern with optimized gate edge geometry. Wey Knife Gate Valves – worldwide first choice. Program. Cost cutting. Low operating costs due to service optimized sealing, which can be repacked...

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AVK Water supply

maximum adhesion of the rubber and prevents creeping corrosion. Safe operation. The large plain and conical stem hole prevents stagnant water and accumulation of impurities. The large rubber volume in the sealing area combined with the excellent compression set provide optimum sealing. AVK GATE VALVES.

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Valve History - Baoyi Group Co.,Ltd

IN general, valve composed of body, bonnet, seat, closure member, actuator, seal and fasten etc. control function is achieved through closure member rise, ... In 2000 B.c., Chinese have been used bamb oo and wooden plug valve in water pipeline, using water gate valve for irrigate channel, using disc check valve for...

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Revolutionary, state-of-the-art knife gate valve ... - The Valve Shop

resilient seat positioned to seal around perimeter of gate for uninterrupted flow, with zero leakage of water allowed in both directions from full vacuum to the full rated pressure of the valve. The resilient seat shall be a molded elastomer of EPDM (or as required for application) with integrally molded packing support bar.

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WTA® Bellows Sealed Globe Valves - CRANE ChemPharma ...

Founded in 1978, WTA®, a Crane ChemPharma & Energy brand, designs and manufactures a comprehensive range of high-quality bellows sealed globe valves, strainers, check valves, relief valves, change-over valves and special valves to meet the stringent specifications required by the global chemical and...

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Gate Valves | ANCORP

A&N gate valves are available in sizes ranging from 1.5 to 12 inches (nominal I.D.). Port terminations are available in three flange families (ISO, CF, and ASA). Manual and pneumatic actuators are available for all A&N gate valves. For ultra-high vacuum applications, a copper bonnet seal version (with CF port terminations)...

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Gate valve - All industrial manufacturers - Videos - Page 5

For isolating steam and water lines To shut off piping systems and piping system lines Coal Fired Power Plants Combined Cycle Power Plants Industrial Power Plant Combined ... 012 Mini gate valve VATLOCK Area of application: The low-priced mini vacuum gate valve is well suited for industrial and R&D applications.

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CITY OF PEARLAND WATER AND WASTEWATER LINE VALVES ...

NPS, for Water and. Sewage Systems. b. AWWA C509 or AWWA C515 Resilient-seated Gate Valves, 3 through 12 NPS, for Water and Sewage Systems c. ... Design: Fully encapsulated rubber wedge or rubber seat ring mechanically .... vacuum relief valves: valve body, ASTM A 48, Class 35, cast iron; seat and plug,.

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1500# Powell Pressure Seal Gate Valve - Flotech Inc

2-24" Pressure Seal Bonnet Butt Weld Ends Cast Carbon, Stainless or Alloy Steel Materials Available in all trim configurations Other sizes available on request. 1500# Powell Pressure Seal Gate Valve Design Features: • Flexible Wedge for improved seating and ease of operation, especially in high temperature service.

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