Short pattern gate valve, type DIN F4, with non-rising stem (NRS), open/closed position indicator, and bolted bonnet. Body is cast iron, trim Rg5, raised face flanges, designed per DIN EN 1171 / DIN 3352 T2.
NRS configuration is selected where installation height is limited, as the stem does not extend during operation. Position indicator is important for visual status verification in pump rooms, manifolds, and lines requiring clear valve status.
Valve is used for start/stop flow only, not for throttling. Typical applications: shipboard water systems, seawater lines, oil circuits, auxiliary engine room systems, and pump manifolds.
Metal seat is suitable where resistance to mechanical wear is prioritized over elastomeric sealing. Tightness depends on seat condition, media cleanliness, and correct flange alignment. Maintenance checks include:
Variants include drain plug and trim in AISI 304 for enhanced corrosion resistance or media compatibility.
Is it suitable for flow regulation?
No. This is an isolation valve.
When is NRS selected?
When installation height above the valve is restricted.
What does DIN F4 mean?
Refers to short face-to-face dimension for flanged gate valves per DIN.
Iron body gate valve with Rg5 trim. Non rising stem with open/close indicator and bolted bonnet. Raised face flanged. Short F4 type.
DESIGN STANDARD:
DIN EN 1171 (DIN 3352 T2)- with indicator.
APPLICATION:
Cold and hot water, fresh water, seawater, lubricating oil. Start/stop flow with minimized pressure drop for water, sea water and oils etc.
VARIATIONS:
With drain plug,AISI 304 trim.
