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B442-020 ITEM 1 — PARTS KIT,SAFETY RELIEF VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B442-020 ITEM 1: PARTS KIT,SAFETY RELIEF VALVE.

The PARTS KIT,SAFETY RELIEF VALVE is a the manufacturer industrial component. Key specifications include supply_items_and_quantities: SPRING 1; SEAT 2. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-247-3226, 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
B442-020 ITEM 1
NSN: 4820-01-247-3226
FSC: 4820 — Valves, Nonpowered
CAGE: 88233 — PARKER HANNIFIN CORPORATION DBA SCHRAEDER BELLOWS DIV PNEUMATIC DIVISION (USA)
SPECIFICATIONS
component_quantity3
supply_items_and_quantitiesSPRING 1; SEAT 2
NSN4820-01-247-3226
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B442-020 ITEM 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
•
COMPONENT QUANTITY: 3
•
SUPPLY ITEMS AND QUANTITIES: SPRING 1; SEAT 2
TECHNICAL CHARACTERISTICS
COMPONENT QUANTITY3
SUPPLY ITEMS AND QUANTITIESSPRING 1; SEAT 2
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
05420-0195Reference 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 B442-020 ITEM 1?
B442-020 ITEM 1 is a PARTS KIT,SAFETY RELIEF VALVE.
What parts can replace B442-020 ITEM 1?
There is 1 known substitute for B442-020 ITEM 1: 05420-0195. Substitute compatibility should be verified for your specific system.
What is the NSN for B442-020 ITEM 1?
B442-020 ITEM 1 is cataloged in the U.S. Government catalog under NSN 4820-01-247-3226. 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.