Metal Bellows Shut-Off Valve DN200 34.046 PN25
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Metal Bellows Shut-Off Valve
The Metal Bellows Shut-Off Valve, which we sell as ORFA Industrial Products Industry and Trade Inc. , is a product that offers high reliability and performance in industrial applications. This valve is designed for use in areas with harsh operating conditions, such as power generation, refineries, petrochemical plants, the chemical industry, food processing plants, and paper mills.
Product Features
The Metal Bellows Shut-Off Valve provides a long-lasting, maintenance-free solution by providing stem sealing with a double-walled stainless steel bellows and a pure graphite safety packing. The valve maintains a seal even if the bellows is damaged by tightening the hexagonal bushing on the stem. Operating on a standard metallic sealing principle, this valve features a conical seat and clapper structure. This new design provides increased throttling performance compared to a straight clapper.
Technical Specifications
Body-Cover: 1.0619+N Steel Casting
Bellows: 1.4571 (AISI 316Ti) Stainless Steel (Double Layer)
Valve: Marginal seated (conical)
Seat and Valve: 1.4021+QT (AISI 420) Stainless Steel
Grease Fitting, Rotation Lock, Mechanical Stroke Indicator
Flywheel: 15≤DN≤125 Pressed Steel, DN>150 EN-JL1040 Cast Iron
Test: EN ISO 15848-1 / TA - Luft TÜV - Test-No. TA 07 2016 C04
Connection: Flanged
Maximum Operating Temperature: 450 ⁰C
Pressure Class: PN25
Metal Bellows Shut-Off Valve Working Principle
The Metal Bellows Shut-Off Valve is a special type of valve that offers high performance and reliability. It's frequently preferred in industrial applications because it effectively seals the shaft, minimizing maintenance requirements. Here's detailed information about this valve's operating principle:
Double Walled Stainless Steel Bellows
Stem sealing, one of the most critical components of valves, is achieved in this product with a double-walled stainless steel bellows. The stainless steel bellows prevents fluid inside the valve from leaking out. The double-walled structure of the bellows enhances sealing performance and ensures safety even in the event of bellows damage. The hexagonal bushing on the stem provides a safety seal with pure graphite packing, even if the bellows is damaged.
Safety Pure Graphite Packing
A pure graphite safety packing, activated in the event of bellows damage, maintains the valve's sealing performance. The graphite packing provides excellent sealing even under high temperatures and pressures. This structure increases the valve's reliability and longevity.
Conical Seat and Valve Structure
The Metal Bellows Shut-Off Valve features a conical seat and clapper structure. This structure provides increased throttling as fluid flows through the valve. The conical seat and clapper design offers more effective flow control compared to a straight clapper. As fluid flows through the valve, the narrowed area between the seat and clapper controls fluid velocity and pressure.
Metallic Sealing Principle
This valve operates according to the standard metallic sealing principle, ensuring sealing by metal-to-metal contact. This method ensures a reliable seal even under high temperatures and pressures. Metallic sealing is more durable and long-lasting than elastomer sealing elements.
Frictionless Operation
The metal bellows stem seal operates virtually frictionlessly during handwheel rotation. This ensures the valve is maintenance-free and offers long-lasting operation. Frictionless operation minimizes wear on the valve's moving parts and reduces operating costs.
Optional Valve Variations
The Metal Bellows Shut-Off Valve is available with 26 different valve variations to suit a variety of applications. These options allow for flexible use in a variety of industrial applications. Each valve variation is designed to meet the needs of a specific application.
Extra Features
Flat Lubrication Nipple: Facilitates valve maintenance.
Locking Device: Prevents unwanted opening or closing of the valve.
Ductile Iron Cover on Cast Iron Valves: Increases durability.
Position Indicator: Indicates whether the valve is open or closed.
Optimized Cover for Accessories: Allows for easy installation of additional parts.
Non-Rising Handwheel: Ensures that the valve remains compact during opening and closing operations.
Areas of Use
The Metal Bellows Shut-Off Valve offers high performance and reliability in a wide range of applications:
Energy Production: Provides reliable operation under high temperature and pressure.
Refineries: Long-lasting thanks to its chemical resistance.
Petrochemical Plants: Can be used safely in abrasive and corrosive environments.
Chemical Industry: Provides reliable sealing and durability.
Food Facilities: Provides a hygienic and safe solution.
Paper Mills: Durable under harsh production conditions.
The Metal Bellows Shut-Off Valve is a product designed to provide superior performance and long-lasting use in industrial applications. At ORFA Industrial Products Industry and Trade Inc. , we are proud to offer this high-quality valve to our valued customers.
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