The Grooved End Gate Valve provides rapid, rigid isolation for municipal water networks, HVAC plumbing, and commercial fire protection systems. Engineered with a resilient-seated wedge and grooved ends conforming to standard pipe dimensions, it enables installation up to 50 percent faster than flanged alternatives while accommodating minor linear pipe movement.
Built in our integrated foundry using automated resin-sand molding lines, every valve body maintains uniform wall thickness and structural integrity under cyclic pressure surges up to 300 PSI.
Technical Specifications
|
Parameter |
Specification Details |
|
Size Range |
NPS 2 inches to 12 inches (DN50 to DN300) |
|
Working Pressure |
PN16, PN25, 300 PSI |
|
Working Temperature |
0°C to 80°C (32°F to 176°F) |
|
End Connections |
Rolled or cut grooved ends to AWWA C606 / ISO 6182 |
|
Body & Wedge Material |
Ductile Iron (ASTM A536 Gr. 65-45-12 / GGG50) |
|
Stem Material |
Stainless Steel (AISI 420 / AISI 304) |
|
Seat & Wedge Coating |
EPDM encapsulated ductile iron wedge |
|
Surface Protection |
Fusion Bonded Epoxy (FBE) coating, internal and external, minimum 250 micrometers thickness |
Key Features
Resilient Wedge Seating: Fully encapsulated EPDM rubber wedge delivers bubble-tight shutoff (zero leakage at 1.1x rated pressure), preventing sediment trapping and seat wear.
Non-Rising Stem Design: Minimizes operational clearance requirements, making it ideal for confined valve pits and wall-mounted installations.
Low Operating Torque: Internal bronze stem nut and polished stainless steel stem reduce friction, allowing manual operation without gearboxes up to DN200.
Flow Efficiency: Straight-through unobstructed waterway eliminates pressure drop and turbulence during full open position.
Applications
Fire Protection Systems: Main control and sectional isolation valves in automatic sprinkler and standpipe networks.
Municipal Water Supply: Potable water distribution lines and pumping station manifold isolation.
HVAC Chilled Water Loops: Commercial building mechanical rooms, cooling tower circuits, and chiller plant headers.
Industrial Utility Piping: Raw water intake and non-corrosive process water routing.
Manufacturing Capabilities & Customization
We operate an integrated manufacturing facility spanning pattern design, casting, CNC machining, coating, and assembly.
Foundry Control: Medium-frequency induction furnaces and direct-reading spectrometer analysis guarantee material chemistry meets ASTM standards prior to pouring.
Precision Machining: CNC vertical turning centers maintain stem-to-bonnet alignment tolerances within 0.02 mm, preventing side-load wear.
OEM/ODM Options:
Custom grooved dimensions for metric or inch-standard steel/ductile iron pipes.
Tamper switch pre-installation for fire monitoring systems.
Private label casting logos and customized packaging for regional distributors.
Testing, Quality & Documentation
Quality verification follows strict protocol before dispatch from our factory:
Pressure Testing: 100 percent shell test at 1.5x working pressure and seat test at 1.1x working pressure per API 598 / EN 12266.
Coating Adhesion Test: Cross-hatch adhesion and holiday detection (spark test at 2.5 kV) ensure pinhole-free epoxy protection.
Traceability: Heat numbers are cast directly onto valve bodies; Material Test Certificates (EN 10204 3.1) are supplied with every shipment.
Certificates: ISO 9001:2015 quality management system; UL/FM compliance options available for fire service models upon request.
FAQ
Q: Are these valves suitable for buried service installations?
A: Yes, when equipped with an optional post indicator or gearbox extension shaft, and protected against soil corrosion. Ensure proper external backfill compaction around grooved couplings.
Q: Can grooved gate valves be installed in a vertical pipeline?
A: Yes. The internal guide ribs support the wedge uniformly, preventing premature bottom seat wear in vertical orientations.
Q: What is the standard lead time for volume orders?
A: Standard sizes (2 inches to 8 inches) in routine quantities ship within 20 to 25 days from order confirmation. Custom specifications require individual scheduling.
Request a Technical Submittal & Quote
Need certified dimension drawings, material submittal sheets, or volume pricing for your project? Submit your specifications below for a direct engineering response within 24 hours.
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