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B43808-1 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B43808-1: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, pressure_rating: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, special_features: MEDIA: REFRIGERENT HFC-236 OR ISO 46 POE LUBRICANT, end_item_identification: 4820-01-505-7901 SAFETY RELIEF VALVE, media_for_which_designed: REFRIGERANT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-520-4266, 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
B43808-1
NSN: 4820-01-520-4266
FSC: 4820 — Valves, Nonpowered
CAGE: 04577 — MISSION SYSTEMS ORCHARD PARK INC (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
pressure_rating150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
special_featuresMEDIA: REFRIGERENT HFC-236 OR ISO 46 POE LUBRICANT
end_item_identification4820-01-505-7901 SAFETY RELIEF VALVE
media_for_which_designedREFRIGERANT
NSN4820-01-520-4266
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B43808-1 · 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
KEY FEATURES
•
PRESSURE RATING: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
MEDIA FOR WHICH DESIGNED: REFRIGERANT
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR
TECHNICAL CHARACTERISTICS
PRESSURE RATING150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
SPECIAL FEATURESMEDIA: REFRIGERENT HFC-236 OR ISO 46 POE LUBRICANT
MEDIA FOR WHICH DESIGNEDREFRIGERANT
END ITEM IDENTIFICATION4820-01-505-7901 SAFETY RELIEF VALVE
MATERIALRUBBER CHLOROPRENE CLASS CR
SUBSTITUTES & CROSS-REFERENCES 2
B14359-13 ITEM 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B14359-13Reference 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 B43808-1?
B43808-1 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace B43808-1?
There are 2 known substitutes for B43808-1: B14359-13 ITEM 4, B14359-13. Substitute compatibility should be verified for your specific system.
What is the NSN for B43808-1?
B43808-1 is cataloged in the U.S. Government catalog under NSN 4820-01-520-4266. 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.