Disclaimer: Key technical specifications herein are extracted from official datasheets of fire butterfly valves by Ningjin APC Industries, a leading UL/FM-listed fire protection valve manufacturer in China. These datasheets are for factory production reference and customer product comprehension. Please contact our technical team for further details.
1. Introduction & Application Overview
High-rise structures require specialized flow control due to immense static head pressures. Specifying high-grade High-Rise Building Fire Fighting System Valves ensures long-term operational integrity and instant status monitoring by Fire Alarm Control Panels (FACP). Supervised butterfly valves with internal tamper switches prevent unauthorized closure and secure critical vertical fire risers.
2. Supervisory Integration and Gearbox Engineering
In high-rise fire suppression loops, an accidental shutoff disables entire sprinkler zones. Advanced High-Rise Building Fire Fighting System Valves utilize heavy-duty signal gearboxes with precision internal micro-switches. Built with ductile iron bodies and covers, steel worms, and 416 stainless steel pins, these assemblies deliver smooth operation. Mechanical gear ratios are matched to pipe sizes:
| Valve Nominal Size | Gear Reduction Ratio | Handwheel Diameter (ΦD) |
|---|---|---|
| 2" – 6" | 24:1 | 152 mm (2"–5") / 200 mm (6") |
| 8" – 10" | 30:1 | 300 mm |
| 12" | 80:1 | 350 mm |
3. Rigorous Pressure Ratings and Certifications
Vertical riser applications demand valves capable of enduring high working pressures without micro-leakage:
- Maximum Working Pressure: 300 PSI (2.1 MPa)
- Maximum Testing Pressure: 600 PSI (hydrostatic testing)
- Compliance Standards: UL 1091, ULC/ORD-C1091, FM 1112
- Global Certifications: UL, CUL, FM, VdS, CE, CCC
4. Frequently Asked Questions (FAQ)
They are designed specifically for high-rise building vertical fire risers, indoor/outdoor inflow water networks, and sprinkler zones operating at up to 300 PSI and 0 to 80°C.
They hold rigorous UL, CUL, FM, VdS, CE, and CCC approvals, meeting all regulatory thresholds required by international building codes and AHJ inspections.
Yes, their robust ductile iron bodies, 416 stainless steel stems, and factory-prewired supervisory switch assemblies make them direct, reliable replacements for premium Western brands.
They adhere to UL/FM American standards, AWWA C606 grooved specifications, DIN/ANSI flange standards, and ISO 5211 top flange mounting rules.
The standard warranty period is generally 18 months. Please verify with your sales representative.
Made-to-order production requires a standard lead time of 6 to 9 weeks, subject to confirmation by our sales team.
