With the help of compressed air as the power source, the pneumatic gate valve drives the gate to open and close the valve through the up and down lifting of the valve stem. It has the advantages of reliable performance, convenient operation switching and maintenance, and has been widely used for various media control by petroleum, chemical, marine and other departments. For the application of pneumatic gate valve, structural form, and valve body material, the user should be familiar with the description of pneumatic gate valve model preparation, so as to avoid the problems of wrong model selection, wrong order and unknown technical parameters, resulting in goods replacement and return.
The description of model preparation of pneumatic gate valve mainly explains the additional conditions, driving mode, connection type, structural characteristics, sealing material, pressure grade and valve body material of gate valve in detail. Other customized or special product models are not applicable to this method and need to be explained separately.
Model preparation method of pneumatic gate valve:
Additional code of gate valve: WZ refers to bellows gate valve, DZ low temperature gate valve, nkz vacuum gate valve and PZ knife gate valve;
Type of gate valve: Z;
Drive mode: manual without code (usually omitted according to regulations), 2 electro-hydraulic, 3-worm, 5-bevel gear drive, 6-pneumatic, 9-electric;
Connection mode: 4 flange connection, 6 welding, 7 clamp type;
Structural form: 0 elastic ram, 1 rising stem wedge single ram, 2-rising stem wedge double ram, 3-rising rod parallel single ram, 4-rising rod parallel double ram, 5-concealed rod wedge-shaped single ram, 6-concealed rod wedge-shaped double ram, 7-concealed rod parallel single ram, 9-rising stem parallel double ram;
Sealing material material: W valve body directly processed, t alloy, X rubber, f fluoroplastic, h-cr stainless steel, y cemented carbide, m Monel alloy; pressure rating: pn1.0-32mpa, 16 = 1.6Mpa, pressure of 16KG, 150lb-1500lb, and daily pressure of 5-63k;
Valve body material: z-gray iron, Q ductile iron, t alloy, C carbon steel, P stainless steel 304, R stainless steel 316, V chromium molybdenum vanadium steel.
Description of model preparation of pneumatic gate valve:
Pz673h-10p stainless steel pneumatic double clip knife gate valve
1. PZ: knife gate valve;
2. 2,6: pneumatic transmission mode;
3. 3 and 7: the connection mode is clip connection;
4. 4. 3: the structure is the rising stem parallel single gate;
5. 5. H: the sealing material is stainless steel;
6. 6,10: the nominal pressure is 1.0MPa;
7. 7. P: the valve body is made of stainless steel.
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