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Grayloc® Non-Slam Nozzle Check Valves
Our Non-Slam Nozzle Check Valve includes an optimized flow profile and unique dual-spring design to solve operational issues, including pressure loss and reverse flow, common with alternative check valve designs. Low friction movement, low part weight, and short disc stroke ensure stable, maintenance-free operation, even in low flow applications. Our customizable and inherently fire-safe valves can be installed horizontally, vertically, and diagonally to meet your most challenging operational needs.
Product Variations
ApPLICATIONS
- Compressor Stations
- Cryogenic
- Desalination
- Natural Gas, Water, Oil, and Fuel Pipelines
- Nuclear
- Refineries
- Subsea
- Water Management
Material Properties
- Body (forged or cast) Nickel alloys, carbon, low-alloy, stainless and duplex stainless steels
- Disc (forged or cast) Nickel alloys, carbon, low-alloy, stainless and duplex stainless steels
- Body seat All API trims. Custom trims available upon request.
- Disc seat All API trims. Custom trims available upon request.
- Internal coating Fusion bonded epoxy or as specified by customer
- External coating Per customer specifications
Technical Data
- Nominal pipe size: 1 to 72 in- End connections: Grayloc clamp connectors and compact flanges, ASME B16.5 flanges, ASME B16.47 flanges, ASME B16.25 weld ends, NORSOK L-005 compact flanges, AS4087 flanges, and API 6A flanges. Other end connections available upon request.
- Design pressure rating: Suitable for ANSI Class 150 up to 10,000 psig- Design temperature range: Per material limit (full metal construction)- Flow orientation: Up, down, diagonal, and horizontal
Document Downloads
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Applicable Design Codes, Standards, and Specifications
- ASME B16.34, Valves
- Flanged, Threaded, and Welding End
- ASME B16.10, Face-to-Face and End-to-End Dimensions of Valves
- AS4794, Non-Return Valves for Waterworks Purposes
- API 6A, Specification for Wellhead and Christmas Tree Equipment
- API 6D, Specification for Pipeline Valves
- API 594, Check Valves: Flanged, Lug, Wafer and Butt-Welding
- API 598, Valve Inspection and Testing
COMMONlY USED GASKET SOLUTIONS
BROWSE GASKET AND SEALING SOLUTIONS
Same day EMERGENCY manufacture and supply
Gasket emergency? We offer same day manufacture and supply for critical situations requiring a rapid response.
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