Defense / Maritime Valves
Aluminum Navy Vent Valves
Lightweight aluminum vent valves to NAVSEA 805-1749102/1749103 Rev B — airtight and watertight closures for HVAC, intake, and exhaust air.
NAVSEA 805-1749102 / 1749103
Lightweight airtight and watertight closures for every Navy ship class.
Lexair aluminum Navy vent valves are manufactured to the NAVSEA standard 805-1749102/1749103 Rev B. They are offered in both round and oval style bodies and feature a working pressure of 15 PSI (tested to 30 PSI).
These Made in the USA products were designed for use as an airtight or watertight closure. They are compliant with several MIL Specs and are used on all Navy ship classes. Available in 2-1/2″ through 30″ round or 7×3″ through 30×20″ oval sizes — typically for HVAC controls plus intake and exhaust air applications.
Features & specs
Round and oval bodies. Shock-qualified for shipboard HVAC.
Features
- Designed for airtight and watertight closures
- MIL-S-901 shock test compliant
- Used on all Navy ship classes
- Lightweight aluminum construction
- Made in the USA
Technical data
- Size range (round)
- 2-1/2″ – 30″
- Size range (oval)
- 7×3″ – 30×20″
- Body style
- Wafer (Fig. 640 / 660)
- Pressure rating
- 15 PSI working / 30 PSI test
- Standard
- NAVSEA 805-1749102/1749103 Rev B
Materials of construction
- Body
- Aluminum
- Disc
- Aluminum / gray epoxy coated
- Stems
- 316 Stainless Steel
- Seat
- Neoprene
- Bushing
- Acetal
- Packing
- Buna-N (where required)
General applications
- HVAC applications
- Intake air
- Exhaust air
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