What is a "seat valve"? Thank you!
Angle seat valve is widely used in short-term frequent start-up, with the characteristics of sensitive response and accurate action. With the use of solenoid valves, the flow of gas and liquid can be accurately controlled by pneumatic control. The requirements of accurate temperature control, dripping and the like can be realized.
Angle seat valve is used to control the steam quantity and accurately control the temperature in the moist heat sterilization cabinet.
Angle seat valve's principle and technical parameters.
Angle seat valve can save space by maintaining the flow rate. It uses a single-acting pneumatic actuators with spring safety protection to operate the pilot angle seat valve. It should be normally open or normally closed when used.
This product is made of stainless steel and PTFE. It can be used in most gases, liquids, vapors and corrosive environments. It has a radiator to protect the actuator and ensure the long service life of the valve.
Angle seat valve's principle and technical parameters;
Single action and double action
Single action (pneumatic head is usually a hole); Working principle; According to the opening and closing function realized by spring return, it can be divided into normally open type and normally closed type.
Double-acting (pneumatic head usually has two holes); Working principle: the air source controls its switch. (according to customer's requirements, you can also choose double-acting plus spring reset, and the control is more accurate. )
Practical application parameters:
Pressure range: 0-2.5Mpa (i.e. PN0-PN25).
Medium temperature: -20℃ ~+200℃ (normal temperature type) -20℃-+300℃ (high temperature type)
Ambient temperature:-10℃ ~+60℃
Specification of thread pneumatic angle seat valve: DN 10-80.
Specification of quick-loading pneumatic angle seat valve: DN 15-80.
Specification of flange pneumatic angle seat valve: DN 15-80.
All stainless steel pneumatic thread (internal thread) angle seat valve: DN 10-65.
All stainless steel pneumatic quick-loading angle seat valve: DN 15-65.
All stainless steel pneumatic flange angle seat valve: DN 15-80 Valve body material: stainless steel.
Sealing material: PTFE
Actuator housing: polyamide press, stainless steel.
Application of Pneumatic angle seat valve in Life;
Control gas: neutral gas, air.
Control fluid: automation industrial control fluid, food-grade dairy industry, domestic water, common pipeline fluid medium, etc.
Six characteristics
1. It has valve open or closed position display.
2. The external pneumatic pilot can increase the service life and is maintenance-free.
3. There is a self-adjusting sealing gland between the overflow port and the slider, which can improve the sealing performance.
4. The angle seat structure of the valve body can realize large flow (especially compared with ordinary globe valves).
Compact structure and quick response.
Applicable safety regulations must be observed.
1. The pipeline must be clean and pollution-free.
2. Install as required, but it is best to make the actuator face up. Watch the flow.
3. Pay attention to the pipeline when connecting the valve. Only when the user has special requirements can the actuator be removed.
4. Before opening or repairing the angle valve, cut off the fluid and control the gas source to reduce the pressure in the pipeline system.
note:
Characteristics when selecting flow direction A:
1. Choosing a good flow direction can improve the service life of the product.
2. When the working medium is liquid, choosing this flow direction can prevent water hammer impact.
3. The working pressure of the product with the diameter of φ 15/φ 20/φ 25 must be below 0.3MPa, otherwise it is necessary to choose double.
Action actuator.
For products with a diameter of Φ 32/Φ 40, the actuator must choose the size of double-acting Φ100.
For products with a diameter of φ 50, the actuator must be double-acting φ 125.
Characteristics when selecting flow direction b:
When the working medium is steam or gas, choosing the flow direction can improve the flow tightness of the product.
Yes, but because the V-shaped sealing ring in the valve body contacts the working medium for a long time, it will have a negative impact on the service life of the product.
Fixed influence, in addition, when the working medium is liquid, it is not waterproof against hammer impact.