Corrosion Resistance Shut Off Globe Valve 4 Inch WCB Manual

4 Inch Flange Globe Valve Stainless Steel Wcb Manual Corrosion Resistance

Globe valve, also known as shut-off valve, is the most widely used valve. It is popular because of the low friction between the sealing surfaces during the opening and closing process, which is more durable, the opening height is not large, the manufacturing is easy, and the maintenance Convenient, not only suitable for medium and low voltage, but also for high pressure. The closing principle of the shut-off valve is to rely on the pressure of the valve rod to make the sealing surface of the valve disc and the sealing surface of the valve seat closely to prevent the medium from flowing.

The valve plays an important role in cutting off and throttling the medium in the pipeline where it is located. As a very important shut-off valve, the valve is sealed by applying torque to the valve stem. The valve disc exerts pressure to make the valve disc sealing surface and the valve seat sealing surface closely fit to prevent the medium from leaking along the gap between the sealing surfaces.

Features:

1. Generally
Bolted Bonnet: Outside Screw and Yoke;

Rising stems;

Metallic seating surfaces

2. Body and Bonnet Connection
Bolted bonnet;

3. Bonnet Gasket Style

Stainless steel + flexible graphite wounded gasket;

4. Packing Seal
As usual, flexible graphite is used for packing material. PTFE or combined packing material can be also used if being requested by the customer.

5. Stem Design

The stem is of integral forged design. The minimum diameter of the stem shall per the standard requirement.

6. Backseat Design

All globe valves have the backseat design. In most cases, the carbon steel globe valve is fitted with a renewable backseat. For stainless steel globe valve, the backseat is machined directly in the bonnet or is machined after welding. When the globe valve is at fully open position, the sealing of the backseat can be very reliable.