Angle Seat Valve

What's the Angle Seat Valve

An angle seat valve is a 2/2-way, pneumatically operated valve that uses a piston actuator to provide linear motion. This motion lifts a sealed piston off its seat, allowing fluid to flow. The valve seat is positioned at an angle within a die-cast valve body to maximize flow rate when the valve is open. The upper part of the valve consists of the pneumatic actuator.

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The actuator structure is similar with a typical air cylinder, with inlet and outlet port. And the on the rod end assembled with sealed piston. When the actuator is drived by the air pressure, it’s piston move upward or downward, thus impel the sealed disc of the valve to open or close through the stem(the piston rod of the cylinder). The return movement of the sealed disc is usually achieved by the spring that can be builted in the pneumatic actuator.

In the double-acting configuration, there is no return spring, and the both of the opening and closing action are drived by the compressed air.

A red visible dome shape indicator are assembled on the top of the actuator.It’s for checking the pistion of the piston of the actuator, so to judge the state of the angle seat valve, opening or closing .

The main advantage is compared with other valve types it gives a high flow rate with low pressure loss. Other benefits include elimination of water hammer and also resistance to backflow. Hence angle seat valves are an economical alternative to ball valves while providing a longer service life.

Various parameters as mentioned above must be considered for the right selection of the valve. The material selected must also be compatible with the medium that flows in it.

MV100-200 manual operate angle seat valve

Model: MV100-15

PV100 Thread ends angle seat valve

Model: PV100-P-15NC-D

PV200 Thread ends +weld socket model

Model: PV200-P-15NC-D

PV300 Weld ends angle seat valve

Model: PV300-P-40NC-4-D

PV400 Flange end model

Model: PV400-P-40NC-5-D

PV500 Tri-clamp ends angle seat valve

Model: PV500-P-40NV-5-S

PV700 Polished actuator model

Model: PV700-S-50-NC-4-S

PV800 Y-type Compact model

Model: PV800-A-50NC-S-H

PVN Nmaur type angle seat valve

Model: PVN-DN15

The Consideration When Choose The Valve.

Operating Temperature, Pressure and material properties

Typically, the maximum working pressure lies in the range of 5 to 20 bar.

Not only the pressure of the media has to be taken into account, also the pressure (range) of the compressed air circuit has to be taken into account. They can handle temperatures up to 200 °C using PTFE (Teflon) sealing. Other sealing materials include NBR (Nitrile Buna Rubber), FKM (Viton) and EPDM, which usually have a lower temperature rating. The temperature and pressure rating is also affected by the housing material.

Typical housing materials include bronze, 314 or 316 stainless steel, brass, plastic and gunmetal. Of these materials, stainless steel offers the best corrosion resistance and material strength. Therefore, most of the high pressure or high temperature model have a stainless-steel housing with PTFE seals.

The piston housing can be made of the same material as the valve body, but some have a plastic housing instead to save weight or production costs.

Application Consideration

1. Single-acting and double-acting :Single-acting (pneumatic head is usually a hole); working principle; according to the function of spring return to open and close, it is divided into normally open type and normally closed type. Double-acting (pneumatic head usually has two holes); working principle: gas supply controls its switch.
2. It can be divided into: stainless steel pneumatic screw (internal thread) style, stainless steel pneumatic quick-loading style, stainless steel pneumatic flange angle seat valve according to the pipeline installation category.
3. Practical application parameters : pressure range: 0-1.6Mpa, medium temperature: -10 ℃ ~+180 ℃, ambient temperature: -10 ℃ ~+60 ℃.
4. Stainless steel pneumatic screw (internal thread) specification: DN15-80, stainless steel pneumatic quick-install model specification: DN15-60, stainless steel pneumatic flange angle seat valve specification: DN15-100, all stainless steel pneumatic wire Buckle (internal thread) angle seat valve: DN15-65, all stainless steel pneumatic quick-load angle seat valve: DN15-65, all stainless steel pneumatic flange angle seat valve: DN15-80.
5. Body material: stainless steel. Sealing material: Teflon. Actuator housing: polyamide press, stainless steel.
6. Application : control gas: neutral gas, air. Control liquid: automatic industrial control fluid, food grade dairy industry, domestic water, common pipeline fluid medium, etc.

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