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DeutschAccording to the domestic valve model standard, the model of gate valve is represented by the valve type, gate valve driving mode, gate valve connection mode, gate valve structure, sealing material and valve body material code.
1. The type code of gate valve is Z;
2. The driving mode code of gate valve is represented by letters. The common ones are 2-electro-hydraulic, 9-electric, 6-pneumatic, 5-bevel gear drive and 3-worm; Manual does not need to be written out;
3. The connection type code of gate valve is indicated by letters, 1-internal thread, 2-external thread, 4-flange type, 6-welding, 7-wafer type, 9-clamp and 0-ferrule;
4. Structural form code of gate valve, 0-elastic gate, 1-rising stem wedge single gate valve, 2-rising stem wedge double gate valve, 3-rising stem parallel single gate valve, 4-rising stem parallel double gate valve, 5-concealed stem wedge single gate valve, 6-concealed stem wedge double gate valve, 7-concealed stem parallel single gate valve, 9-concealed stem parallel double gate valve;
5. Sealing materials or lining materials are r-austenitic stainless steel, t-copper alloy, x-rubber, s-plastic, n-nylon plastic, f-fluoroplastic, h-cr stainless steel, y-cemented carbide, j-rubber lining, m-monel alloy and TC ceramic respectively;
6. Valve body material code: z-gray cast iron, k-malleable cast iron, q-nodular cast iron, t-copper and alloy, c-carbon steel, p-chromium nickel stainless steel, r-chromium nickel molybdenum stainless steel, v-chromium molybdenum vanadium steel.
For example: for electric, flange connected, rising stem wedge double gate valve, the sealing surface material is directly processed from the valve body, the nominal pressure is pn0.1mpa, and the valve body material is gray cast iron: z942w-1 electric wedge double gate valve.
1. The type code of gate valve is Z;
2. The driving mode code of gate valve is represented by letters. The common ones are 2-electro-hydraulic, 9-electric, 6-pneumatic, 5-bevel gear drive and 3-worm; Manual does not need to be written out;
3. The connection type code of gate valve is indicated by letters, 1-internal thread, 2-external thread, 4-flange type, 6-welding, 7-wafer type, 9-clamp and 0-ferrule;
4. Structural form code of gate valve, 0-elastic gate, 1-rising stem wedge single gate valve, 2-rising stem wedge double gate valve, 3-rising stem parallel single gate valve, 4-rising stem parallel double gate valve, 5-concealed stem wedge single gate valve, 6-concealed stem wedge double gate valve, 7-concealed stem parallel single gate valve, 9-concealed stem parallel double gate valve;
5. Sealing materials or lining materials are r-austenitic stainless steel, t-copper alloy, x-rubber, s-plastic, n-nylon plastic, f-fluoroplastic, h-cr stainless steel, y-cemented carbide, j-rubber lining, m-monel alloy and TC ceramic respectively;
6. Valve body material code: z-gray cast iron, k-malleable cast iron, q-nodular cast iron, t-copper and alloy, c-carbon steel, p-chromium nickel stainless steel, r-chromium nickel molybdenum stainless steel, v-chromium molybdenum vanadium steel.
For example: for electric, flange connected, rising stem wedge double gate valve, the sealing surface material is directly processed from the valve body, the nominal pressure is pn0.1mpa, and the valve body material is gray cast iron: z942w-1 electric wedge double gate valve.
