HD-Alarm Valve-H, Flanged ANSI B16.1, Catalogue No. HD247, UL Listed & FM Approved Constant Pressure Trim Assembly for Alarm Valve-H, Water Motor Gong Bell -GA , Type-A, UL Listed & FM approved Size:150NB
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The HD-Alarm Valve-H is a flanged alarm check valve designed for wet pipe fire protection systems, ensuring reliable water flow control and alarm signaling during fire events. It includes a Constant Pressure Trim Assembly to maintain system stability and a Water Motor Gong Bell (Type-A) for audible alarm activation.
Key Features: ✔ UL Listed & FM Approved – Complies with stringent safety standards ✔ Flanged ANSI B16.1 – Ensures secure pipe connections ✔ Constant Pressure Trim – Prevents false alarms & pressure fluctuations ✔ Water Motor Gong Bell (Type-A) – Mechanical alarm without electrical components ✔ 150NB (6") Size – Suitable for medium to large fire protection systems
2. Technical Specifications
A. Alarm Valve-H (HD247)
Parameter
Specification
Model
HD-Alarm Valve-H
Size
150NB (6")
Connection Type
Flanged (ANSI B16.1 Class 125/150)
Body Material
Ductile Iron (Epoxy Coated)
Seat Material
EPDM / Buna-N (Corrosion-Resistant)
Max Working Pressure
12 bar (175 psi)
Temperature Range
-10°C to 60°C (14°F to 140°F)
Trim Assembly
Constant Pressure Trim (Included)
Standards
UL 193, FM 1120, NFPA 13, NFPA 24
B. Water Motor Gong Bell (Type-A)
Parameter
Specification
Type
Mechanical (Non-Electric)
Operation
Water-Driven Turbine
Sound Output
≥ 85 dB @ 3m (Audible Alarm)
Material
Bronze/Stainless Steel
Approvals
UL Listed & FM Approved
C. Constant Pressure Trim Assembly
Maintains stable system pressure
Reduces false alarms from pressure surges
Includes pressure gauges & retard chamber
3. Applications
✔ Commercial Buildings (Offices, Malls, Hospitals) ✔ Industrial Facilities (Warehouses, Factories) ✔ High-Rise Residential Systems ✔ Wet Pipe Sprinkler Systems
4. Installation & Maintenance
Must be installed per NFPA 13 & NFPA 24
Requires annual flow testing & inspection
Compatible with central station monitoring (if integrated with electrical switches)
Product Details
The HD-Alarm Valve-H is a flanged alarm check valve designed for wet pipe fire protection systems, ensuring reliable water flow control and alarm signaling during fire events. It includes a Constant Pressure Trim Assembly to maintain system stability and a Water Motor Gong Bell (Type-A) for audible alarm activation.
Key Features: ✔ UL Listed & FM Approved – Complies with stringent safety standards ✔ Flanged ANSI B16.1 – Ensures secure pipe connections ✔ Constant Pressure Trim – Prevents false alarms & pressure fluctuations ✔ Water Motor Gong Bell (Type-A) – Mechanical alarm without electrical components ✔ 150NB (6") Size – Suitable for medium to large fire protection systems
2. Technical Specifications
A. Alarm Valve-H (HD247)
Parameter
Specification
Model
HD-Alarm Valve-H
Size
150NB (6")
Connection Type
Flanged (ANSI B16.1 Class 125/150)
Body Material
Ductile Iron (Epoxy Coated)
Seat Material
EPDM / Buna-N (Corrosion-Resistant)
Max Working Pressure
12 bar (175 psi)
Temperature Range
-10°C to 60°C (14°F to 140°F)
Trim Assembly
Constant Pressure Trim (Included)
Standards
UL 193, FM 1120, NFPA 13, NFPA 24
B. Water Motor Gong Bell (Type-A)
Parameter
Specification
Type
Mechanical (Non-Electric)
Operation
Water-Driven Turbine
Sound Output
≥ 85 dB @ 3m (Audible Alarm)
Material
Bronze/Stainless Steel
Approvals
UL Listed & FM Approved
C. Constant Pressure Trim Assembly
Maintains stable system pressure
Reduces false alarms from pressure surges
Includes pressure gauges & retard chamber
3. Applications
✔ Commercial Buildings (Offices, Malls, Hospitals) ✔ Industrial Facilities (Warehouses, Factories) ✔ High-Rise Residential Systems ✔ Wet Pipe Sprinkler Systems
4. Installation & Maintenance
Must be installed per NFPA 13 & NFPA 24
Requires annual flow testing & inspection
Compatible with central station monitoring (if integrated with electrical switches)
HD-Alarm Valve-H, Flanged ANSI B16.1, Catalogue No. HD247, UL Listed & FM Approved Constant Pressure Trim Assembly for Alarm Valve-H, Water Motor Gong Bell -GA , Type-A, UL Listed & FM approved Size:150NB
