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77643-75X1 — VALVE,BUTTERFLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

77643-75X1: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include flange_shape: ROUND ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: STRAIGHT THRU, mounting_facility: BULKHEAD, flange_face_design: PLAIN ALL ENDS, valve_operation_method: AUTOMATIC. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-214-6901, 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
77643-75X1
NSN: 4820-01-214-6901
FSC: 4820 — Valves, Nonpowered
CAGE: 71905 — DERBYSHIRE MACHINE & TOOL CO (USA)
SPECIFICATIONS
flange_shapeROUND ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorSTRAIGHT THRU
mounting_facilityBULKHEAD
flange_face_designPLAIN ALL ENDS
valve_operation_methodAUTOMATIC
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
NSN4820-01-214-6901
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 77643-75X1 · 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
•
FLANGE SHAPE: ROUND ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MOUNTING FACILITY: BULKHEAD
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SINGLE RESPONSE
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLANGE SHAPEROUND ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
MOUNTING FACILITYBULKHEAD
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
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 1
SSN637-501-2143878Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 77643-75X1?
77643-75X1 is a VALVE,BUTTERFLY.
What parts can replace 77643-75X1?
There is 1 known substitute for 77643-75X1: SSN637-501-2143878. Substitute compatibility should be verified for your specific system.
What is the NSN for 77643-75X1?
77643-75X1 is cataloged in the U.S. Government catalog under NSN 4820-01-214-6901. 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.