Actuated on/off valve type 700 | AWS

Automatic On/Off Valve AWS Type 700

The AWS Type 700 is a pneumatically actuated 2/2 angle seat valve with a piston and external control. The flow direction is seat-closing, suitable for rapid isolation rather than continuous flow regulation. Available in DN10–DN50, with operating pressure up to 16 bar.

Materials and Sealing

The body is made of stainless steel, with PTFE or RTFE seat sealing and PTFE shaft sealing. The medium temperature range is -10°C to +180°C, while the permissible ambient temperature is up to +60°C. Seat leakage is classified as Class A according to EN 12266-1.

Connections and Sizes

The valve is available with internal thread G 3/8" to G 2" or with welding ends according to DIN EN 10357, formerly DIN 11850, and DIN EN ISO 1127 / ISO 4200. Kv values range from 4.7 to 52.8 m³/h, depending on DN and actuator size.

Actuator and Control

The control medium is compressed air. The required control pressure is 3–7 bar and should be checked against diagrams, especially for DN40–DN50 and high differential pressure. The basic function is NC, meaning closed without air. An NO version is optionally available. Options include a 3/2 pilot valve, manual override, and electric position indication.

Typical Applications

• On/off isolation in process water, air, neutral liquids, and compatible gases.
• Industrial lines with frequent opening/closing.
• Skids, auxiliary circuits, clean networks, and lines with limited space.
• Fluids with viscosity up to 600 mm²/s, provided they are compatible with PTFE and stainless steel.

FAQ

When to choose NC?
When the valve must close upon air loss.

When is a larger actuator required?
When DN, line pressure, or closing differential pressure increases.

Is it suitable for regulation?
No. It is an on/off rapid isolation valve, not a control valve.