91-D-078 — VALVE,CHECK

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

91-D-078: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, mounting_position: HORIZONTAL OR VERTICAL, operating_pressure: 900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-384-6527, 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-078

NSN: 4820-01-384-6527
FSC: 4820 — Valves, Nonpowered
CAGE: 71905 — DERBYSHIRE MACHINE & TOOL CO (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING FLOW CONTROL DEVICE
connection_type	UNTHREADED INTERNAL PIPE ALL ENDS
connection_style	SOCKET (PIPE) ALL ENDS
style_designator	STRAIGHT THRU
mounting_position	HORIZONTAL OR VERTICAL
operating_pressure	900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_method	WEIGHT
flow_control_device	DISK
valve_operation_method	AUTOMATIC
media_for_which_designed	WATER-OIL-GAS SINGLE RESPONSE
nondefinitive_spec/std_data	900 CLASS AND A STYLE AND 6 TRIM AND 3 TYPE
specification/standard_data	81349-MIL-V-18436E GOVERNMENT SPECIFICATION
NSN	4820-01-384-6527

COMPONENT DIAGRAM

KEY FEATURES

•

FLOW CONTROL DEVICE: DISK

•

NOMINAL PIPE SIZE ACCOMMODATED: 1.000 INCHES ALL ENDS IN

•

CONNECTION STYLE: SOCKET (PIPE) ALL ENDS

•

MOUNTING POSITION: HORIZONTAL OR VERTICAL

•

CONNECTION TYPE: UNTHREADED INTERNAL PIPE ALL ENDS

•

STYLE DESIGNATOR: STRAIGHT THRU

•

OPERATING PRESSURE: 900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS

•

SPECIFICATION/STANDARD DATA: 81349-MIL-V-18436E GOVERNMENT SPECIFICATION

TECHNICAL CHARACTERISTICS

FLOW CONTROL DEVICE	DISK
NOMINAL PIPE SIZE ACCOMMODATED	1.000 INCHES ALL ENDS IN
CONNECTION STYLE	SOCKET (PIPE) ALL ENDS
MOUNTING POSITION	HORIZONTAL OR VERTICAL
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATOR	STRAIGHT THRU
OPERATING PRESSURE	900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SPECIFICATION/STANDARD DATA	81349-MIL-V-18436E GOVERNMENT SPECIFICATION
NONDEFINITIVE SPEC/STD DATA	900 CLASS AND A STYLE AND 6 TRIM AND 3 TYPE
DISK LOADING METHOD	WEIGHT

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 2

MIL-DTL-18436Reference document

Same NSN cross-reference

Reference document — Identification reference

MIL-V-18436Reference document

Same NSN cross-reference

Reference document — Secondary reference

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-078?

91-D-078 is a VALVE,CHECK.

What parts can replace 91-D-078?

There are 2 known substitutes for 91-D-078: MIL-DTL-18436, MIL-V-18436. Substitute compatibility should be verified for your specific system.

What is the NSN for 91-D-078?

91-D-078 is cataloged in the U.S. Government catalog under NSN 4820-01-384-6527. This indicates validated use in U.S. government and defense supply chains.

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