Search Catalog
 All Categories    IRON VALVES
All Categories > IRON VALVES  


Click on a Product to view details.

Cast Iron Non-Return Valves

250 lb SP Cast Iron Non-Return Valves

Lunkenheimer Non-Return Valves cut out a boiler automatically when inside pressure drops suddenly or when heat is withdrawn. External spring is reversed and valve acts as a spring-loaded stop-chock valve. Spring may be adjusted from the outside while valve is under pressure to compensate for excessive steam pulsations. Valves may be installed in either vertical or horizontal position.

Bodies and Bonnets
Cast Iron. ASTM A-126

Seat, disc, back seat bushing and yoke bushing is S1 steam bronze, ASTM B-61.

Seating Surfaces
Regrindable. Seat disc and all other parts renewable.

Installation Note
Connection should be made directly to boiler outlet nozzle. Intervening pipe ...