ATWOOD & MORRILL®
Boiler Feed Check Valves
Positive Closing Check valves are designed to effectively prevent reverse flow and are ideally suited for high pressure feedwater and steam applications. The design uses a one-piece disc and relatively few moving parts to minimize operating difficulties and simplify maintenance.
Once installed, the valve can be inspected easily without removing it from the line and internals can be removed through the top cover. The closing mechanism can also be inspected easily without removing it from the valve by taking off the cyliner to expose the piston.
KEY FEATURES & BENEFITS
“Double protection” including positive closure and power assisted closure
Streamlined flow design minimizes pressure drop
Fast closing design minimizes water hammer
APPLICATIONS
Boiler feed pump discharge
Condensate pump discharge
Heater drains
Main steam
High pressure feedwater
DESIGN STANDARD
ASME B16.34
PRESSURE CLASS RANGE
ASME 900 to 2500
SIZE RANGE
4 – 24 inches (100 – 600 mm)
TEMPERATURE RANGE
Up to 1,200ºF
MATERIALS
Cast carbon
Alloy
Stainless steel
F91 Austenitic Stainless steel
END CONFIGURATION
Weld End
UPGRADES & ADAPTATIONS
Air cylinder modification
Packing upgrade
Live loaded packing
Replace hard seal with graphite seal
