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845-6556172-1 MOD — VALVE,RELIEF,PRESSURE AND TEMPER

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

845-6556172-1 MOD: VALVE,RELIEF,PRESSURE AND TEMPER.

VALVE,RELIEF,PRESSURE AND TEMPER. Key specifications include body_style: ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS, first_end_connection_type: PLAIN FACE FLANGE, criticality_code_justification: ZZZY, second_end_relationship_with_first_end: IDENTICAL, first_connection_face_to_centerline_distance: 4.120 INCHES NOMINAL IN, second_connection_face_to_centerline_distance: 4.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-346-1697, 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
845-6556172-1 MOD
NSN: 4820-01-346-1697
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
body_styleANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS
end_connection_quantity2
first_end_connection_typePLAIN FACE FLANGE
criticality_code_justificationZZZY
second_end_relationship_with_first_endIDENTICAL
first_connection_face_to_centerline_distance4.120 INCHES NOMINAL IN
second_connection_face_to_centerline_distance4.500 INCHES NOMINAL IN
reference_number_differentiating_characteristicsQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NSN4820-01-346-1697
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 845-6556172-1 MOD · 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
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
BODY STYLE: ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS
•
FIRST CONNECTION FACE TO CENTERLINE DISTANCE: 4.120 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
END CONNECTION QUANTITY: 2
•
SECOND CONNECTION FACE TO CENTERLINE DISTANCE: 4.500 INCHES NOMINAL IN
•
FIRST END CONNECTION TYPE: PLAIN FACE FLANGE
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
TECHNICAL CHARACTERISTICS
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
BODY STYLEANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE4.120 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONZZZY
END CONNECTION QUANTITY2
SECOND CONNECTION FACE TO CENTERLINE DISTANCE4.500 INCHES NOMINAL IN
FIRST END CONNECTION TYPEPLAIN FACE FLANGE
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 3
845-6556172 ITEM 1 MODL1Reference document
Same NSN cross-reference
Reference document — Secondary reference
845-6556172 ITEM 1 MODReference document
Same NSN cross-reference
Reference document — Design control — primary reference
845-6556172-1 MODL1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 845-6556172-1 MOD?
845-6556172-1 MOD is a VALVE,RELIEF,PRESSURE AND TEMPER.
What parts can replace 845-6556172-1 MOD?
There are 3 known substitutes for 845-6556172-1 MOD: 845-6556172 ITEM 1 MODL1, 845-6556172 ITEM 1 MOD, 845-6556172-1 MODL1. Substitute compatibility should be verified for your specific system.
What is the NSN for 845-6556172-1 MOD?
845-6556172-1 MOD is cataloged in the U.S. Government catalog under NSN 4820-01-346-1697. This indicates validated use in U.S. government and defense supply chains.
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