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R6181BH — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

R6181BH: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE, valve_size: 2.625 INCHES IN, bonnet_type: INSIDE SPRING, flange_shape: ROUND SECOND END, connection_type: FLANGE SECOND END, style_designator: ANGLE FLANGED ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-288-6884, 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
R6181BH
NSN: 4820-00-288-6884
NIINs: 002886884, 002886886
FSC: 4820 — Valves, Nonpowered
CAGE: 16497 — DRESSER, INC. DBA DRESSER EQUIPMENT GROUP DIV INDUSTRIAL VALVE OPERATIONS, DRESSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
valve_size2.625 INCHES IN
bonnet_typeINSIDE SPRING
flange_shapeROUND SECOND END
connection_typeFLANGE SECOND END
style_designatorANGLE FLANGED ENDS
nominal_thickness0.812 INCHES SECOND END IN
bolt_hole_quantity4 SECOND END
flange_face_designRAISED STRAIGHT FIRST END
operating_pressure634.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE LBS
flow_control_devicePOPPET
valve_operation_methodAIR
NSN4820-00-288-6884
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: R6181BH · 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
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REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: LEFT HAND VALVE
TECHNICAL CHARACTERISTICS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSLEFT HAND VALVE
SUBSTITUTES & CROSS-REFERENCES 1
R6181BYReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R6181BH?
R6181BH is a VALVE,SAFETY RELIEF.
What parts can replace R6181BH?
There is 1 known substitute for R6181BH: R6181BY. Substitute compatibility should be verified for your specific system.
What is the NSN for R6181BH?
R6181BH is cataloged in the U.S. Government catalog under NSN 4820-00-288-6884. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.