VQ677H-16P pneumatic V type ball valve

Overview of VQ677H-16P Pneumatic V-Type Ball Valve

The pneumatic V-type regulating ball valve is a newly developed hard-sealed, tetrafluoro-sealed regulating ball valve. It adopts a movable valve seat structure loaded by a leaf spring, the valve seat and the ball body will not cause problems such as jamming or separation of the pneumatic V-shaped regulating ball valve (13 photos), reliable sealing and long service life. The spool of the V-shaped ball valve is designed as a V-shaped gap with a special switch, with large flow capacity, small pressure loss, and accurate shut-off characteristics and control functions. The flow characteristics are approximately equal percentages. The opening and closing parts adopt the V-shaped ball structure, which completely solves the problem of easy deposition of medium in the valve cavity.

VQ677H-16P pneumatic V type ball valve application standard

Design basis: GB/T12237, ANSI B16.34, API 608

Structure length: GB/T12221, ASME B16.10, JIS B2002

Wall thickness: ASME B16.34

Fire test: API 607 4th 1993

Inspection and testing: GB/T 13927, API598, JIS B2003

Use characteristics

1. The fluid resistance is small, and the pneumatic ball valve is the smallest fluid resistance in all valve categories. Even the reduced diameter pneumatic ball valve, its fluid resistance is quite small. 2. The thrust bearing reduces the friction moment of the valve stem, which can make the valve stem operate smoothly and flexibly for a long time. 3. The valve seat has good sealing performance. The sealing ring made of PTFE and other elastic materials is easy to seal, and the valve sealing capacity of the pneumatic ball valve increases with the increase of the medium pressure. 4. The valve stem is reliable in sealing. Since the valve stem is only used for imitating rotation and not lifting movement, the packing seal of the valve stem is not easy to be damaged, and the sealing ability increases with the increase of the pressure of the medium. 5. Since materials such as polytetrafluoroethylene have good self-lubricity and small friction loss with the ball, the pneumatic ball valve has a long service life. 6. The bottom-mounted valve stem and the convex step of the valve stem head prevent the valve stem from spraying out. If the valve stem seal is damaged due to fire, the convex step and the valve body can also form metal contact to ensure the valve stem seal. 7. Anti-static function: a spring is set between the sphere, the valve stem and the valve body, which can lead out the static electricity generated during the switching process

Selection of VQ677H-16P Pneumatic V-Type Ball Valve

1. Valve body parameters: series parameters such as nominal diameter, working pressure, process medium, use occasion, valve body material, etc.

2. Actuator parameters: actuator form, control mode, control signal (4-20MA/1-5V), action mode (switch type, air-closed type)

Try to provide the parameters in detail so that our technicians can accurately select the model for you. If you have any questions, please call us. We will definitely provide you with the best quality service.

VQ677H-16P pneumatic V type ball valve packaging and delivery requirements

Valve mark of VQ677H-16P pneumatic V-type ball valve

1. Unless otherwise specified, the normal situation only needs to be in accordance with the valve model identification of the pneumatic butterfly valve;

2. The valve plate of the pneumatic butterfly valve should be firmly fixed on the obvious part of the valve, and its content must be neat and correct, and should meet the requirements of GB/T 13306. Its materials should be made of stainless steel, copper alloy and aluminum alloy.

3. The paint used for color code and marking must not contain any harmful metals or metal salts, such as zinc, lead, sulfur, copper, tin, chloride, etc., which can cause corrosion when heated, and the paint should be resistant to salt water , Corrosion in tropical environments or similar conditions.

4. Regarding the marks engraved on the nameplate, generally model, material, pressure, standard, applicable temperature, use medium, and production date are all indispensable. In order to facilitate the purchase when repairing and replacing.

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