Globe Valve Bronze with non return plug JIS 16K - F7409
SDNR Straight-Through Globe Valve JIS 16K F7409
The F7409 is a flanged, straight-pattern Screw Down Non Return (SDNR) globe valve designed for marine piping systems with JIS 16K flange connections. It combines manual shut-off and non-return (check) functionality in a single unit. Product specification classifies it as bronze-bodied, flanged, JIS 16K, straight-through flow.
Operating Principle
Manual handwheel operation drives the stem to press the disc against the seat for full shut-off. When open, the disc acts as a check element, restricting reverse flow. Construction features a metal seat, gland packing at the stuffing box, and rising stem design.
Technical Specifications
- Type: SDNR globe valve, straight-through pattern
- Connection: JIS 16K flanges
- Catalogue sizes: DN15–DN40
- Materials: body bronze, bonnet bronze/brass, stem brass, disc bronze/brass
- Sealing: metal seat and gland packing
- Certification: 3.1 / 3.2 material certificates and class society inspection on request
Pressure and Temperature Ratings
- Non-shock water: 22 bar at 120°C
- Air, gases, steam, pulsed water: 16 bar at 205°C
Suitable Media
Applicable for cold and hot water, seawater, saturated steam, oil, and neutral non-corrosive liquids.
Typical Applications
- Seawater cooling lines in ship engine rooms
- Service water and hot water circuits
- Auxiliary steam circuits
- Low/medium pressure oil lines
- Shipside or primary isolation points requiring class inspection
Selection vs. Other Types
The F7409 is selected over F7351 where JIS 16K pressure class is required instead of JIS 5K. For 90° flow direction change, use the angle pattern F7410. Compared to a standard globe valve, SDNR adds non-return functionality.
FAQ
Is this a flow control valve?
Not for precise control duty. Main functions are isolation and non-return.
What is checked during maintenance?
Stem packing, seat/disc wear, free disc movement, and corrosion signs in seawater service.
