PartsTable
Technical Data Sheet
A51H9217-1 ✓ 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

VALVE,REGULATING,FLUID PRESSURE. Key specifications include filter: NOT INCLUDED, material: ALUMINUM ALLOY 7075 FLOW CONTROL DEVICE, body_style: STRAIGHT THRU, temp_rating: -65.0 FAHRENHEIT MINIMUM AND 275.0 FAHRENHEIT MAXIMUM DEGF, regulation_type: AUTOMATIC SINGLE STAGE, surface_treatment: ANODIZE AND PAINT OUTSIDE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-376-5618, 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
A51H9217-1
NSN: 4820-00-376-5618
FSC: 4820
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialALUMINUM ALLOY 7075 FLOW CONTROL DEVICE
body_styleSTRAIGHT THRU
temp_rating-65.0 FAHRENHEIT MINIMUM AND 275.0 FAHRENHEIT MAXIMUM DEGF
regulation_typeAUTOMATIC SINGLE STAGE
surface_treatmentANODIZE AND PAINT OUTSIDE
flow_control_devicePISTON, SPRING LOADED
valve_loading_methodSPRING
first_end_thread_class3B
end_connection_quantity2
second_end_thread_class3A A
media_for_which_designedHYDRAULIC OIL
NSN4820-00-376-5618
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: A51H9217-1 · 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
FIRST END THREAD DIRECTION: RIGHT-HAND
SECOND END RELATIONSHIP WITH FIRST END: NOT IDENTICAL
SECOND END STYLE DESIGNATOR: EXTERNAL SEAT FOR GASKET SEAL
BODY STYLE: STRAIGHT THRU
FIRST END CONNECTION TYPE: THREADED INTERNAL BOSS
SECOND END CONNECTION TYPE: THREADED EXTERNAL BOSS
FIRST END STYLE DESIGNATOR: GASKET SEAL
FIRST END THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END THREAD DIRECTIONRIGHT-HAND
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SECOND END STYLE DESIGNATOREXTERNAL SEAT FOR GASKET SEAL
BODY STYLESTRAIGHT THRU
FIRST END CONNECTION TYPETHREADED INTERNAL BOSS
SECOND END CONNECTION TYPETHREADED EXTERNAL BOSS
FIRST END STYLE DESIGNATORGASKET SEAL
FIRST END THREAD CLASS3B
MEDIA FOR WHICH DESIGNEDHYDRAULIC OIL
SECOND END THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
49-140Interchangeable
interchangeable cross-reference
interchangeable
2600-2Interchangeable
interchangeable cross-reference
interchangeable
MS39242-43-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A51H9217-1?
A51H9217-1 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace A51H9217-1?
There are 3 known substitutes for A51H9217-1: 49-140, 2600-2, MS39242-43-2. Substitute compatibility should be verified for your specific system.
What is the NSN for A51H9217-1?
A51H9217-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-376-5618. This indicates validated use in U.S. government and defense supply chains.
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