Knife Gate Valve Supplier-GNEE
The order of compilation is: valve type, driving mode, connection form, structural form, sealing surface material or lining material type, nominal pressure code or working pressure code at working temperature, valve body material.
- Valve type code
|
Valve type |
Code |
Type |
Code |
| Spring Loaded Safety Valve |
A |
Blowdown Valve |
P |
| Butterfly Valve |
D |
Ball Valve |
Q |
| Diaphragm Valve |
G |
Steam Traps |
S |
| Lever safety valve |
GA |
Plunger Valve |
U |
| Check Valves And Foot Valves |
H |
Plug Valve |
X |
| Globe Valve |
J |
Pressure Reducing Valve |
Y |
| Throttle Valve |
L |
Gate Valve |
Z |
- Valve codes with other functions or other special structures
| Second function name |
Code |
Second function name |
Code |
| Insulation type |
B |
Slag discharge type |
P |
| Low temperature type |
Da |
Fast type |
Q |
| Fireproof type |
F |
(Stem seal) bellows type |
W |
| Slow closing type |
H |
- |
- |
|
a Low-temperature type refers to valves that are allowed to be used at temperatures below -46°C. |
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- Valve drive mode code
| Drive Mode |
Code |
Drive Mode |
Code |
| Electromagnetic motion |
0 |
Bevel Gear |
5 |
| Electromagnetic-hydraulic |
1 |
Pneumatic |
6 |
| Electric-hydraulic |
2 |
Hydraulic |
7 |
| Worm gear |
3 |
Air-hydraulic |
8 |
| Spur Gear |
4 |
Electric |
9 |
| Note: Code 1, Code 2 and Code 8 are used when the valve opens and closes. Two power sources are required to operate the valve at the same time. | |||
1. For valves with safety valves, pressure reducing valves, steam traps, and handwheels directly connected to the valve stem for operation, this code is omitted and does not indicate.
2. For valves operated by pneumatic or hydraulic mechanisms: normally open type is represented by 6K and 7K; normally closed type is represented by 6B and 7B;
3. The valves of explosion-proof electric devices are represented by 9B;
4. Connection form code
5. The connection form code is expressed in Arabic numerals, as specified in Table 4.
6. The specific structure, standards or methods of various connection forms (such as flange surface form and sealing method, welding form, thread form and standards, etc.) should not be represented by symbols after the connection code, but should be shown in the product drawings, instructions or Details shall be stated in the order contract and other documents.
- Valve connection end connection form code
| Connection Type |
Code |
Connection Type |
Code |
| Internal Thread |
1 |
Wafer Type |
7 |
| External Thread |
2 |
Clamp Type |
8 |
| Flange Type |
4 |
Card Sleeve |
9 |
| Welded Type |
6 |
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Valves
