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91-D-253 2IN — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

91-D-253 2IN: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include valve_size: 2.000 INCHES IN, connection_type: FLANGE ALL ENDS, style_designator: STRAIGHT THRU FLANGED ENDS, mounting_position: HORIZONTAL OR VERTICAL, flange_face_design: RAISED STRAIGHT ALL ENDS, flow_control_device: DISK. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-416-6889, 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
91-D-253 2IN
NSN: 4820-01-416-6889
FSC: 4820 — Valves, Nonpowered
CAGE: 71905 — DERBYSHIRE MACHINE & TOOL CO (USA)
SPECIFICATIONS
valve_size2.000 INCHES IN
connection_typeFLANGE ALL ENDS
style_designatorSTRAIGHT THRU FLANGED ENDS
mounting_positionHORIZONTAL OR VERTICAL
flange_face_designRAISED STRAIGHT ALL ENDS
flow_control_deviceDISK
face_to_face_distance8.000 INCHES IN
valve_operation_methodAUTOMATIC
end_item_identificationNIMITZ CLASS CVN
NSN4820-01-416-6889
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 91-D-253 2IN · 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
•
FLOW CONTROL DEVICE: DISK
•
FLANGE FACE DESIGN: RAISED STRAIGHT ALL ENDS
•
MOUNTING POSITION: HORIZONTAL OR VERTICAL
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
•
VALVE SIZE: 2.000 INCHES IN
•
FACE TO FACE DISTANCE: 8.000 INCHES IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
MOUNTING POSITIONHORIZONTAL OR VERTICAL
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
VALVE SIZE2.000 INCHES IN
FACE TO FACE DISTANCE8.000 INCHES IN
END ITEM IDENTIFICATIONNIMITZ CLASS CVN
VALVE OPERATION METHODAUTOMATIC
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91-D-253 2IN?
91-D-253 2IN is a VALVE,CHECK.
What is the NSN for 91-D-253 2IN?
91-D-253 2IN is cataloged in the U.S. Government catalog under NSN 4820-01-416-6889. 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.