UL/FM Wet Hydrant
Date Updated: August 10, 2026
Prepared by: Fire Gate Valve Technical Department
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Ningjin APC Industries is a premier UL & FM certified manufacturer in China, delivering high-performance industrial and fire protection valves built to strict international safety standards.
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UL/FM Wet Hydrant
▏Product Description
Ningjin APC Industries presents its high-performance Wet Hydrant series (Models: MH-1511, MH-1511A, MH-1512, and MH-1512A), engineered explicitly for heavy-duty commercial fire protection and municipal water supply infrastructure. Designed in strict accordance with AWWA C503 standards, this robust wet hydrant delivers a maximum working pressure of 250PSI, ensuring optimal water flow and reliability during critical fire emergency operations. Built to order with a standard lead time of 45 working days, our fire hydrants feature model-specific FM/UL approvals and UL listings (with MH-1511 holding FM/UL and models MH-1511A, MH-1512, and MH-1512A holding UL listings) to guarantee seamless project commissioning and compliance with rigorous North American safety standards.
▏Technical Features
| Parameter Item | Parameter Value |
|---|---|
| Design Standard | AWWA C503 |
| External Thread Standard | NFPA 1963 2.5"-7.5NH / 4"-4NH / 4.5"-4NH |
| Water Inlet Flange Standard | ASTM B16.5 Class150 6" / DIN2501 PN16 DN150 |
| Maximum Working Pressure | 250PSI |
| Monitor Flange Standard | ASTM B16.5 Class150 4" / DIN2501 PN16 DN100 |
| Working Temperature Range | 0~80°C / 32~176°F |
▏General Technical Information
| Model Number | Hose Outlet Size | Pumper Nozzle Size | Monitor | Approval |
|---|---|---|---|---|
| MH-1511 | 2X2.5" | 1X4.5" | N/A | FM/UL |
| MH-1511A | 2X2.5" | 1X4.5" | YES | UL |
| MH-1512 | 2X2.5" | 1X4" | N/A | UL |
| MH-1512A | 2X2.5" | 1X4" | YES | UL |
▏Valve Material List
| NO. | Name | QTY | Material |
|---|---|---|---|
| 1 | Main Body | 1 | Ductile Iron |
| 2 | Nut | 3 | C954 |
| 3 | 2.5"Bolt | 2 | SS304/C954 |
| 4 | 4.5"Bolt | 1 | SS304/C954 |
| 5 | Stem cap | 3 | Ductile Iron |
| 6 | Bolt | 3 | SS304 |
| 7 | 2.5"Tray | 2 | Ductile Iron/SS304/C954 |
| 8 | 4.5"Tray | 1 | Ductile Iron/SS304/C954 |
| 9 | 2.5"Sealing rubber sheet | 2 | EPDM |
| 10 | 4.5"Sealing rubber sheet | 1 | EPDM |
| 11 | 2.5"Platen | 2 | Ductile Iron/SS304/C954 |
| 12 | 4.5"Platen | 1 | Ductile Iron/SS304/C954 |
| 13 | 2.5"Outlet | 2 | C954 |
| 14 | 4.5"Outlet | 1 | C954 |
| 15 | 2.5"Outlet cover | 2 | Ductile Iron |
| 16 | 4.5"Outlet cover | 1 | Ductile Iron |
| 17 | 2.5"Cover gasket | 2 | EPDM |
| 18 | 4.5"Cover gasket | 1 | EPDM |
| 19 | Cotter pin | 3 | SS304 |
| 20 | Slotted nut | 3 | SS304 |
| 21 | Cover chain | Gr.B |
▏Frequently Asked Questions
1. What are the specific design standards and maximum working pressure ratings for the Ningjin APC Industries MH-1511/1511A/1512/1512A wet hydrant series?
The MH-1511/1511A/1512/1512A wet hydrant series is designed in strict adherence to AWWA C503 standards. It operates at a maximum working pressure of 250PSI, making it exceptionally reliable for high-demand municipal and commercial fire suppression systems requiring stable water delivery.
2. Which official certifications do the MH-1511, MH-1511A, MH-1512, and MH-1512A wet hydrant models carry for engineering compliance?
The MH-1511 model holds FM/UL certifications, while the MH-1511A, MH-1512, and MH-1512A variants are UL listed. These official listings ensure full acceptance by project inspectors and insurance underwriters across North America.
3. What material specifications are used for the main body and internal components of the MH-1511/1511A/1512/1512A wet hydrant?
The main body of the MH-1511/1511A/1512/1512A wet hydrant is crafted from durable ductile iron, complemented by C954 bronze nuts and outlets, EPDM sealing rubber sheets, and SS304 fasteners to ensure superior corrosion resistance. You can explore more wet hydrant specifications directly on our official product portfolio page.
4. What is the standard manufacturing lead time for ordering the MH-1511/1511A/1512/1512A wet hydrant for large EPC construction projects?
The standard manufacturing lead time for custom production of the MH-1511/1511A/1512/1512A wet hydrant series is exactly 45 working days, ensuring reliable scheduling and fulfillment for large-scale engineering, procurement, and construction (EPC) timelines.
5. What thread standards and inlet flange configurations are available for the MH-1511/1511A/1512/1512A wet hydrant?
The MH-1511/1511A/1512/1512A wet hydrant features NFPA 1963 external thread standards (2.5"-7.5NH, 4"-4NH, and 4.5"-4NH), alongside water inlet flange options conforming to ASTM B16.5 Class150 6 inch or DIN2501 PN16 DN150 specifications for versatile piping integration.
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