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Technical Data Sheet
PartsTable / COMPONENT / B-786-1
B-786-1 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

VALVE,LINEAR,DIRECTIONAL CONTROL. Key specifications include end_item_identification: ACFT E3A NOSE LANDING GEAR, general_characteristics_item_description: STEEL 4130; MIL-S-6758, 0.875 IN. HEX 6.312 IN.

LG IN. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-225-0704, 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
B-786-1
NSN: 4820-00-225-0704
FSC: 4820
CAGE: 46717 — PETTIBONE LLC (USA)
SPECIFICATIONS
end_item_identificationACFT E3A NOSE LANDING GEAR
general_characteristics_item_descriptionSTEEL 4130; MIL-S-6758, 0.875 IN. HEX 6.312 IN. LG IN
NSN4820-00-225-0704
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B-786-1 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESCAST IRON BODY;STEEL SLIDE;PLASTIC PULL KNOB;THREE INTERNALLY THD PIPE PORTS;ONE INLET;TWO OUTLETS;ALL 0.500-14 NPT;TWO PLAIN MTG HOLES 0.315 IN.DIA;2.125 IN.CENTER TO CENTER DISTANCES;5.460 IN.O/A LG;2.562 IN.O/A W;3.205 IN.O/A H;DESIGNED FOR HYDRAULIC SVC IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
B7Interchangeable
interchangeable cross-reference
interchangeable
3053Interchangeable
interchangeable cross-reference
interchangeable
9034Interchangeable
interchangeable cross-reference
interchangeable
R3X1228Interchangeable
interchangeable cross-reference
interchangeable
R3X1473Interchangeable
interchangeable cross-reference
interchangeable
700013Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-786-1?
B-786-1 is a VALVE,LINEAR,DIRECTIONAL CONTROL.
What parts can replace B-786-1?
There are 14 known substitutes for B-786-1: B7, 3053, 9034 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-786-1?
B-786-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-225-0704. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026