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PartsTable / COMPONENT / 170-28955
170-28955 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

HOUSING,CYLINDER,PNEUMATIC ACTUA. Key specifications include material: STEEL COMP 4140 OVERALL, flange_shape: RECTANGULAR WITH HOLES SECOND END, thread_class: 2A FIRST END A, nominal_width: 2.500 INCHES SECOND END IN, nominal_length: 2.500 INCHES SECOND END IN, connection_type: FLANGE SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-068-4735, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
170-28955
NSN: 4820-01-068-4735
FSC: 4820
CAGE: 07270 — MOOG INC. DBA AMPAC-ISP CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
flange_shapeRECTANGULAR WITH HOLES SECOND END
thread_class2A FIRST END A
nominal_width2.500 INCHES SECOND END IN
nominal_length2.500 INCHES SECOND END IN
connection_typeFLANGE SECOND END
connection_stylePLAIN (TUBE) FIRST END
nominal_thickness0.882 INCHES SECOND END IN
bolt_hole_quantity4 SECOND END
flange_face_designRAISED STRAIGHT SECOND END
nominal_thread_size2.250 INCHES FIRST END IN
nominal_overall_length2.884 INCHES IN
NSN4820-01-068-4735
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 170-28955 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: SELECTED TESTED AND CERTIFIED FOR TRIDENT SUBMARINE APPLICATION
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSSELECTED TESTED AND CERTIFIED FOR TRIDENT SUBMARINE APPLICATION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
170-28955Interchangeable
interchangeable cross-reference
interchangeable
28954Interchangeable
interchangeable cross-reference
interchangeable
170-28955 ITEM 1Interchangeable
interchangeable cross-reference
interchangeable
28962Interchangeable
interchangeable cross-reference
interchangeable
CB27549-001Interchangeable
interchangeable cross-reference
interchangeable
170-41715 ITEM 3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 170-28955?
170-28955 is a HOUSING,CYLINDER,PNEUMATIC ACTUA.
What parts can replace 170-28955?
There are 10 known substitutes for 170-28955: 170-28955, 28954, 170-28955 ITEM 1 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 170-28955?
170-28955 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-068-4735. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026