Part Number: 485-8B28-2

Description: Check Valve for Bell 171 NSN 4820-01-183-2258.

Properties

Thread Class:

3a 2nd end

Thread Direction:

Right-hand 1st end

Flow Control Device:

Poppet

Disk Loading Method:

Spring

End Application:

Advance attack helicopter ah-1w. Mh-53e helicopter. S-3b viking aircraft. B-52 aircraft support equipment. C-2a (reprocured) aircraft. Hh-60h search and rescue helicopter. Hh-60j uscg search and rescue helicopter. F-14 tomcat aircraft.

Connection Style:

External seat for gasket seal (boss) 2nd end

Valve Operation Method:

Automatic

Thready Qty Per Inch (tpi):

A16 2nd end

Maximum Operating Pressure:

3000.0 pounds per square inch single response

Thread Size:

0.750 inches 2nd end

Seat Angle:

37.0 degrees 2nd end

Criticality Code Justification:

Feat

Special Features:

Weapon system essential

Material:

Steel flow control device

Style Designator:

Straight thru

Thread Series Designator:

Unj 2nd end

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