Union Valve supplies butterfly valves, gate valves, check valves and flanges for dependable isolation, backflow prevention and pipeline connection in fire sprinkler, hydrant, standpipe, fire pump and fire-water distribution systems.
✓ Reliable isolation and non-return protection for critical fire-water pipelines
✓ Valve selection based on pressure rating, connection type, actuation and system requirements
✓ Product options for applicable international standards and project-specific specifications
Explore typical valve locations and product options across fire pump, sprinkler, hydrant and fire-water distribution systems.
Valve solutions for dependable isolation, non-return protection and equipment connection around fire pump installations.
Pump suction · Pump discharge · Bypass · Test lines
Isolation and directional flow solutions for wet, dry and pre-action sprinkler system pipework.
Main supply · Zone isolation · Risers · Test and drain branches
Reliable shut-off and non-return protection for hydrants, standpipes and zoned fire-water supply networks.
Building inlets · Standpipe risers · Zone branches · Hydrant mains
Valve and connection solutions for controlling fire water between storage facilities and distribution networks.
Tank outlets · Reservoir lines · Ring mains · Building supply lines
Product selection should be based on the system location, pipe size, design pressure, connection type, operating method, required approvals and applicable fire-protection standards.
Compact shut-off valves for fire-water mains and sectional isolation points. Their short face-to-face dimension makes them suitable for large pipe sizes and installations with limited space.
Duty: On/off isolation
Connections: Wafer · Lug · Grooved · Double flanged
Typical locations: Fire-water mains · Sprinkler risers · Pump discharge lines
Selection: Size · Pressure · Connection · Operation
Full-bore isolation valves for locations where unrestricted flow and low pressure loss are important. They are normally operated fully open or fully closed.
Duty: Main pipeline isolation
Designs: Resilient seated · NRS · OS&Y
Typical locations: Pump suction lines · Hydrant mains · Standpipes · Tank outlets
Selection: Size · Pressure · Stem design · Connection
Automatic non-return valves that prevent water from flowing back through pumps and supply pipelines. Closing performance should be matched to the flow velocity and potential surge conditions.
Duty: Reverse-flow prevention
Types: Swing · Dual plate · Silent check
Typical locations: Pump discharge lines · Fire-water supply lines · Zoned networks
Selection: Flow velocity · Orientation · Closing response · Installation space
Detachable pipe connections used to join valves, pumps and fire-water pipelines. Flange dimensions and ratings must match the connected equipment, gasket and bolting arrangement.
Duty: Valve and equipment connection
Typical locations: Pump connections · Valve connections · Risers · Fire-water mains
Selection: Standard · Size · Pressure rating · Facing · Material
Start with the required function and installation point, then confirm the size, pressure rating, connection, materials, operation and project approval requirements.
| If the project requires | Choose | Typical locations |
|---|---|---|
| Full-bore isolation with minimal flow restriction | Gate Valve | Pump suction and discharge lines, hydrant mains, standpipes and tank outlets |
| Compact isolation where installation space is limited | Butterfly Valve | Large-diameter mains, sprinkler risers, ring mains and sectional isolation points |
| Automatic prevention of reverse flow | Check Valve | Fire pump discharge and fire-water supply lines |
| A detachable connection between valves, pumps and pipelines | Flange | Pump connections, valve connections, risers and fire-water mains |
Match the product to the specified pipeline size.
Confirm the design pressure and possible surge conditions.
Confirm flanged, wafer, lug or grooved connection, subject to product type.
Match the water quality, temperature, corrosion conditions and project specification.
Confirm handwheel, lever, gearbox or actuator requirements.
Check accessibility, orientation and maintenance clearance.
Follow the contract, drawings and technical specification.
Verify required approval for the specific product and model.
Final selection must be confirmed against the project specification. Any required approval should be verified for the specific product type and model offered.
It is normally installed on the pump discharge line to prevent water from flowing back through the pump.
Availability depends on the valve model, size and configuration. Please specify the required approval so it can be confirmed before quotation.
Common options include flanged, wafer, lug and grooved connections, depending on the valve type and pipework.
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