Ammonia Globe Valve
The ammonia globe valve adopts precision cast valve body and inside screw back-seal structure. V-shaped molded PTFE serves as dynamic seal, and the packing provides primary sealing. The sealing performance of packing improves as medium pressure rises, realizing self-sealing function without manual maintenance. The sealing surface of disc is designed with grooves to compress PTFE O-ring, forming double sealing structure to achieve zero internal and external medium leakage.
Basic Technical Parameters
| Item | Specification |
|---|---|
| Nominal Diameter | DN10-DN300 |
| Nominal Pressure | PN16-PN40 |
| Operation Mode | Manual, Electric, Pneumatic |
| Disc Material | Carbon Steel, Stainless Steel |
| Bonnet Material | Cast Steel, Ductile Iron, Stainless Steel |
| Stem Material | Stainless Steel |
| Valve Body Material | Cast Steel, Ductile Iron, Stainless Steel |
| Applicable Medium | Ammonia Gas, Liquid Ammonia |
| Operating Temperature | -40℃-150℃ |
PTFE Packing Parameters
| Item | Specification |
|---|---|
| Max Working Pressure | 27.6 Barg (400 PSIg) |
| Temperature Range | -29˚C to +135˚C (-20°F to +275°F) |
| Refrigerant Compatibility | Suitable for ammonia systems, also compatible with A2L, HCFC, HFC and HFO |
| Size Range | 3/8", 1/2", 3/4" and 1" |
Test Pressure Parameters
| Nominal Pressure PN(Mpa) | Body Strength Test(Mpa) | Sealing Test(Mpa) |
|---|---|---|
| 1.6 | 2.4 | 1.8 |
| 2.5 | 3.8 | 2.8 |
Main Parts Materials
| Model | Body & Bonnet | Stem | Packing | Sealing Surface | Gasket | Fasteners |
|---|---|---|---|---|---|---|
| Yiluoke-(16/25)C | Cast Steel | Carbon Steel | PTFE | Babbitt Alloy | Asbestos Rubber Sheet | High Quality Carbon Steel |
| Yiluoke-(16/25)O | Ductile Iron | Carbon Steel | PTFE | Babbitt Alloy | Asbestos Rubber Sheet | High Quality Carbon Steel |
| Yiluoke-(16/25)K | Malleable Cast Steel | Carbon Steel | PTFE | Babbitt Alloy | Asbestos Rubber Sheet | High Quality Carbon Steel |
Application Fields
Ammonia globe valves are specially designed for pipelines and equipment conveying ammonia gas and fuel gas, with fire protection requirements considered in structural design. PTFE packing ensures reliable sealing without external leakage. The sealing pair adopts PTFE or nylon matched with valve body material to form soft seal for reliable tightness.
Selection & Order Instructions
1. Model and name of dedicated ammonia globe valve
2. Nominal diameter DN of dedicated ammonia globe valve
3. Rated flow coefficient KV of dedicated ammonia globe valve
4. Nominal pressure and pressure difference of dedicated ammonia globe valve
5. Material of valve body and internal components
6. Flow characteristic of dedicated ammonia globe valve
7. Applicable temperature of dedicated ammonia globe valve
8. Power supply voltage and control signal
9. Whether accessories are required
