Production Description:
A manual gate valve is a type of valve that controls the flow of fluid by using a gate or wedge-shaped disc to block or allow the passage of the fluid. It is operated manually, typically by turning a handwheel or a lever.
Here are some key features and components of a manual gate valve:
1. Body: The body is the main outer casing of the valve, usually made of metal such as brass, bronze, iron, or stainless steel. It provides the primary structure and houses the internal components.
2. Bonnet: The bonnet is a cover or cap attached to the body of the valve. It helps in sealing the valve and provides access to the internal parts for maintenance or repairs.
3. Gate or Wedge: The gate or wedge is a disc-shaped component that moves perpendicular to the flow of the fluid. When the gate is lowered, it allows fluid to pass through the valve, and when raised, it blocks the flow.
4. Stem: The stem is a rod that connects the handwheel or lever to the gate. When the operator turns the handwheel or operates the lever, the stem moves, raising or lowering the gate to control the flow.
5. Handwheel or Lever: The handwheel or lever is the manual control mechanism used to operate the valve. It is attached to the stem and provides leverage for the operator to turn or move the stem.
6. Seat: The seat is a sealing surface located on the body, against which the gate makes contact when fully closed. It ensures a tight seal and prevents leakage when the valve is closed.
7. Packing: The packing is a material, such as graphite or Teflon, used to create a seal around the stem where it passes through the bonnet. It prevents leakage along the stem.
Parameter Sheet:
Executive Standard | API 6A, NACE M0175 |
Rated Working Pressure | 2000psi - 20000psi |
Bore Size | 2 1/16" - 7 1/16" |
Connection | Flange, Thread, Clamp |
Material Class | AA, BB, CC, DD, EE, FF |
Temperature Class | L, P, R, S, T, U, V |
Performance Level | PR1, PR2 |
Product Specification Level | PSL1 - PSL4 |