What does gate valve ZA40H mean

The opening and closing parts of the ZA40H gate valve are the gate plate, the direction of movement of the gate plate is perpendicular to the fluid direction, and the gate valve can only be fully opened and closed, and can not be adjusted and throttled. The ram has two sealing surfaces, and the most commonly used mode gate valve has two sealing surfaces forming a wedge, and the wedge angle varies with the valve parameters, usually 50, and 2°52 when the medium temperature is not high. The gate plate of the wedge gate valve can be made into a whole, which is called a rigid gate; It can also be made into a ram that can produce a slight amount of deformation to improve its manufacturability and make up for the deviation of the sealing surface angle in the processing process, which is called the elastic ram.

Z -- indicates the gate valve (the initial letter of ZHA) 4--- is the form of connection, indicating the flange connection.

1--- The structural form indicates that the 40--- nominal pressure of the open rod wedge rigid single gate gate valve H --- sealing surface surfacing iron-based cemented carbide (the first letter of HE of alloy steel) is 40 kg, that is, the maximum working pressure of PN10 below 250 degrees Celsius is 40 kg.

The material is cast carbon steel.

Z41 doesn't need to be talked about.

The W and T here refer to the sealing surface or lining material, and W refers to the sealing surface as the material of the valve itself.

t The sealing surface is copper alloy.

The movement direction of the Z45T-10Q ductile iron dark rod flange gate valve gate valve is perpendicular to the fluid direction, and the gate valve can only be fully opened and closed, and cannot be adjusted and throttled. The ram has two sealing surfaces, and the two sealing surfaces of the more commonly used mode gate valve form a wedge-shaped and wedge-shaped angle valve.

Z45T-10Q ductile iron dark rod flange gate valve has low flow resistance. The medium channel inside the valve body is straight, and the medium flows in a straight line, and the flow resistance is small. It is more labor-saving when opening and closing.

This is compared to the shut-off valve, because the direction of movement of the ram is perpendicular to the direction of the medium flow, whether it is open or closed.

Gate valve precautions.

When operating, the human body should not be facing the top of the valve stem to prevent the valve stem from being sprayed out under pressure and injuring people.

The switch operation should be stable and the force should be uniform, and it is strictly forbidden to use impact force.

The design of the strength of the handwheel (handle) is based on the torque value required for operation, so the handwheel (handle) cannot be used as an operating pedal and arbitrarily increased or socketed to lengthen the lever, or a wrench to excessively increase the torque, let alone use ropes and other acts on the handwheel (handle), and then use a crane or pulley to operate or lift the valve.

Gate valve Z45T-10Q refers to the copper sealed gate valve made of ductile iron with a nominal pressure of 1MPa (10 kg). The meaning of its letters and numbers is:

z stands for - gate valve;

4 means - flange connection;

5 means - dark rod structure;

T indicates that the sealing surface of the seat is made of copper or copper alloy;

10 means - nominal pressure 1 megapascal;

Q indicates that the body is made of ductile iron.

z: Gate valve (valve type).

4: Flange type (connection method).

5-wedge-type single ram (structural form).

T-copper alloy (sealing surface material).

10q stands for 10 pressure.

According to the provisions of the "JB T 308-2004 valve model preparation method".

z Gate valve. 4 Flange connection.

1. Structural form: wedge-type single ram.

x Sealing surface material: rubber.

16== Pressure Rating:

Q== Body Material: Ductile Iron.

Gate valve (z) flange connection (4) wedge single gate (1) rubber soft seal (x) -16 pressure (q).

Z41X-16Q represents a rubber soft seal open rod gate valve, flange connection, pressure 16 kg, valve body made of ductile iron.

Split the model number.

Inside: Z represents the gate valve capacity, 4 represents the flange connection, 1 represents the open rod wedge single gate structure, X represents the sealing surface material is rubber, 16 means the nominal pressure is 16 kg, and Q means that the valve body is made of ductile iron.

1. The ram structure is different

Z40 is a wedge-type elastic ram;

Z41 is a single ram rigid wedge ram.

2. The working principle is different

The opening and closing parts of the Z40 gate valve are the ram, the direction of movement of the ram is perpendicular to the direction of the fluid, and the gate valve can only be fully opened and closed, and cannot be adjusted and throttled. The ram has two sealing surfaces, and the most commonly used mode gate valve has two sealing surfaces forming a wedge, and the wedge angle varies with the valve parameters, usually 5°, and 2°52 when the medium temperature is not high'。

Z41 gate valve is a valve that relies on the gate plate as the opening and closing part and moves vertically along the axis of the valve seat to achieve the opening and closing action. The main advantages of the gate valve are smooth flow path, low fluid resistance, and small opening and closing torque;

Handwheels, handles and transmission mechanisms are not allowed to be used for lifting, and collisions are strictly prohibited. The double gate valve should be installed vertically (i.e., the stem is in a vertical position and the handwheel is at the top). Gate valves with bypass valves should be opened before opening (to balance the pressure difference between the inlet and outlet and reduce the opening force).

The gate valve with transmission mechanism shall be installed according to the provisions of the product instruction manual.

There are two differences:

1. The sealing material of Z41Y is cemented carbide; The Z41H sealing surface is alloy steel.

2. Gate valve (gate valve) is an opening and closing part ram, the direction of movement of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, and the parameters of the door are different, usually 5°, and 2°52' when the medium temperature is not high.

To improve its manufacturability and make up for the deviation of the sealing surface angle in the processing process, this kind of ram is called elastic ram.