ZSFM Deluge Alarm Valve

ZSFM Deluge Alarm Valve Purpose

Fire Deluge valve refers to a control valve that reaches automatic water supply by controlling the fire water pipeline and can be opened by electric, hydraulic, pneumatic and mechanical means. The working principle and function of the deluge alarm valve is that it can control the flow of the fire storage water in the fire pipe of the building towards the sprinkler head according to the fire situation. it is a kind of timely and efficient fire valve. General rain deluge alarm valves are designed with hydraulic alarm bell, ball valve, needle valve and pressure switch valve parts.

It is widely applied in various open-type system (open-type sprinkler is installed at the side pipe) such as deluge system, water curtain system and water mist system.

ZSFM Deluge Alarm Valve Technical parameters

ZSFM Deluge Alarm Valve Definition and Components

ZSFM Deluge Alarm Valve is a China-standard deluge system control valve with integrated alarm functions. The model code decodes as:

• Z: Automatic
• S: Water Spray
• F: Valve
• M: Deluge

Main Components:

• Valve Body Assembly - Main pressure housing with inlet/outlet
• Diaphragm/Clapper Assembly - Sealing element held closed by system pressure
• Alarm Line Trim - Includes strainer, restrictor orifice
• Pressure Switch - Electrical alarm activation (dry contacts)
• Water Motor Gong - Hydraulic audible alarm device
• Solenoid Valve (Pilot) - Electric release mechanism (24VDC/110VAC/220VAC)
• Manual Release Device - Mechanical override for valve operation
• Test & Drain Valves - For system testing and maintenance
• Pressure Gauges - Supply and system pressure indication

Role, Characteristics, and Application Scenarios of ZSFM Deluge Alarm Valve in Pipelines

Primary Functions:

• System Control: Maintains water supply to deluge piping in closed position
• Fast Activation: Opens fully upon fire detection signal (not temperature)
• Dual Alarm: Provides both electrical (pressure switch) and audible (water motor gong) alarm signals
• System Supervision: Monitors water supply pressure and valve status

Operational Features:

• Dry Piping: Downstream piping remains dry until activation
• Multiple Activation Methods: Electric (solenoid), hydraulic, pneumatic, or manual
• Full Flow Design: Opens to 100% when triggered, not modulating
• Automatic Alarm: Triggers immediately upon water flow
• Field Reset Required: Must be manually closed and reset after operation

Application Scenarios:

• Industrial High-Hazard Areas: Paint spray booths, chemical processing
• Power Generation: Turbine halls, transformer yards
• Aircraft Facilities: Hangars, fuel servicing areas
• Special Storage: Flammable liquid storage, ammunition depots
• Tunnels & Underground: Road/rail tunnels with fixed fire suppression

ZSFM Deluge Alarm Valve Standards: Materials, Design, and Connections

Material Standards:

• Body/Bonnet: Ductile Iron QT450-10 (GB/T 1348), Cast Iron HT250 (GB/T 9439)
• Internal Trim: Bronze (GB/T 1176), Stainless Steel 304/316
• Diaphragm: EPDM (GB/T 21873) or NBR for oil resistance
• Springs: Stainless Steel 304/316
• Coatings: Epoxy powder coating per fire protection standards

Design Standards:

• GB 5135.5-2018: Chinese national standard for deluge valves
• CCCF Certification: China Compulsory Certification for fire protection products
• NFPA 15/UL 260: International equivalents for water spray systems
• FM Global: Approval standard for deluge valves
• EN 12259-4: European standard for water mist components

Connection Standards:

• Flanged: GB/T 17241 (Chinese standard), ANSI B16.1 Class 125, EN 1092-2 PN16
• Threaded: Rp (BSPT) threads per GB/T 7306
• Typical Sizes: DN50, DN65, DN80, DN100, DN150, DN200
• Alarm Line: Usually DN20 or DN25 threaded connections

How to Select ZSFM Deluge Alarm Valve

Step-by-Step Purchasing Guide:

Technical Specification Development:

• Determine required size (based on hydraulic calculations)
• Specify pressure rating (PN16 standard, PN25 optional)
• Define activation method (single solenoid, dual solenoid, pneumatic, etc.)
• Identify required certifications (CCCF mandatory for China)
• Note special requirements (corrosion resistance, seismic rating)

Supplier Qualification:

• Verify CCCF certificate validity on Chinafire
• Check manufacturer's production license scope includes deluge valves
• Request factory audit report if ordering large quantities
• Evaluate export experience and documentation capabilities

Documentation Requirements:

• CCCF certificate with full product model coverage
• Factory test reports for each valve
• Material certificates (GB/T standard compliance)
• Installation and maintenance manuals in required languages
• CE/UL/FM certificates if for export markets

Commercial Considerations:

• Minimum Order Quantity: Typically 1-10 units depending on size
• Lead Time: 30-60 days for standard sizes
• Payment Terms: 30% deposit, 70% before shipment
• Incoterms: FOB Shanghai/Ningbo common for export
• Warranty: Standard 12-24 months from shipment

Pre-Shipment Inspection for Export ZSFM Deluge Alarm Valve and Key Considerations

Inspection Protocol:

Critical Export Precautions:

1. Post-Test Drying: After hydrostatic testing, complete disassembly and drying is mandatory. Use compressed air and desiccants. Include humidity indicator cards in final packaging.
2. Corrosion Protection: Apply temporary corrosion inhibitor to all machined surfaces. Use VCI (Vapor Corrosion Inhibitor) paper wrapping.
3. Thread Protection:Install heavy-duty plastic thread protectors on all connections.
4. Sensitive Component Protection:Solenoid valve: Individual shock-absorbing packaging

Pressure switch: Moisture barrier bag with desiccant

Water motor gong: Foam cushioning, protective cover

6. Packaging Structure:

7.Documentation Package:

Commercial Invoice (3 originals)

Packing List (3 originals)

Bill of Lading

Certificate of Origin

CCCF Certificate (copy + original available)

Factory Test Certificates

Material Certificates per GB/T 2828

Installation Manual (EN/CN languages)

8.Special Considerations for Sea Shipment:

Use desiccant calculated for 60-day voyage (minimum)

Mark crates: "KEEP DRY" "FIRE PROTECTION EQUIPMENT"

Ensure proper ventilation in container to prevent condensation

Consider container dehumidifier for tropical routes

System Status Indicators:

Key Operational Notes:

• Pre-Action Signal: Detection system confirms fire before valve activation
• Total Flooding: All nozzles in zone activate simultaneously
• Dual Drainage: Water collection and oil separation systems
• Manual Override: Multiple manual activation points available
• Post-Fire Reset: Requires trained personnel to reset system

ZSFM Deluge Alarm Valve Main dimensions(mm)