Zhejiang Keshida Self Control Valve Co., Ltd
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ZSHO Pneumatic O-type Cut off Ball Valve
ZSHO Pneumatic O-type Cut off Ball Valve
Product details

Product Overview

Nominal diameter: DN15~250mm

Applicable temperature:- 30~250℃

Main materials: 304, 316, WCB
Drive modes: pneumatic, manual, electric, hydraulic, etc

Applicable media: water, gas, oil products, natural gas, and acid-base corrosive media, etc

It can be matched with solenoid valves, limit switches, and air filter pressure reducing valves. It can be controlled by inputting DC24V, AC220V power supply, and 0.4-0.7Mpa air source to switch parameters such as pressure, flow rate, temperature, and liquid level. It is powered by compressed air, and the valve stem drives the valve core to rotate 90 ° inside the valve body, achieving a fully open fully closed action. It has the characteristics of compact structure, small volume, reliable operation, good sealing, easy maintenance, convenient installation, and strong adaptability. It can be widely used in automatic control systems for industries such as petroleum, chemical, teaching equipment, light industry, high-voltage equipment, pharmaceuticals, papermaking, etc., for remote centralized control or on-site control.

Compared with other valve types, it has the following advantages:

1. Low fluid resistance, ball valves have the lowest fluid resistance among all valve types, even for reduced diameter ball valves, their fluid resistance is quite small. 2. The thrust bearing reduces the friction torque 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, and the sealing ring is made of elastic materials such as polytetrafluoroethylene. The structure is easy to seal, and the sealing ability of the ball valve increases with the increase of medium pressure. 4. The valve stem seal is reliable. As the valve stem only rotates without lifting, the packing seal of the valve stem is not easily damaged, and the sealing ability increases with the increase of medium pressure. 5. Due to the good self-lubricating properties of materials such as polytetrafluoroethylene, the friction loss with the ball is small, resulting in a long service life of the ball valve. 6. The bottom mounted valve stem and the protruding step at the head of the valve stem prevent the valve stem from spraying out. In the event of a fire causing damage to the valve stem seal, the protruding step can also form a metal contact with the valve body to ensure the valve stem seal. 7. Anti static function: Install springs between the ball, valve stem, and valve body to dissipate static electricity generated during the switching process.

Main technical parameters:

Nominal diameter mm

DN15-DN300

Material code

C

P

R

Main components

valve body

WCB

ZG1Cr18 Ni9Ti

ZG1Cr18Ni 12Mo2Ti

sphere

2Cr13

1Cr18Ni9Ti

1Cr18Ni12MoTi

Valve stem

2Cr13

1Cr18Ni9Ti

1Cr18Ni12MoTi

seal ring

Enhance the sealing of polytetrafluoroethylene to polystyrene metal

filler

Polytetrafluoroethylene flexible graphite

Applicable working conditions

Applicable media

Steam, water, oil products

Nitric acid

Acetic acid

Applicable temperature

-28℃ - 300℃

Actuator

model

DA/SR series, GTD/GTE series, QGSY series, etc

Gas source pressure

0.4-0.7MPa

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