PartsTable TECHNICAL DATA SHEET

NSN 4820-01-304-8225Government record, cited

Valve, Check4820-01-304-8225

NSN 4820-01-304-8225 · NIIN 013048225 · Part number SS70-916L-6-4J

Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 78286

Government record, cited

NSN 4820-01-304-8225 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-304-8225. Manufacturer of record part number: SS70-916L-6-4J.

Also searched as 4820-01-304-8225 · 4820013048225 · NIIN 013048225 · 01-304-8225 · FSC 4820 Valves, Nonpowered · CAGE 78286 · SS70-916L-6-4J · SS70

Nearby stock numbers ← 4820-01-304-8224 Valve, Globe · 4820-01-304-8226 Valve, Check →

4820-01-304-8225 — Valves, Nonpowered

Features

Valve,check — FSC 4820
Connection Style: FLARELESS ALL ENDS
Supplementary Features: FLOW CONTROL DEVICE: DIAPHRAGM
Connection Type: THREADED EXTERNAL TUBE ALL ENDS
Style Designator: STRAIGHT THRU
Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Thread Direction: RIGHT-HAND ALL ENDS

Identification

NSN: 4820-01-304-8225
NIIN: 013048225
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: SS70-916L-6-4J
Manufacturer: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

General Description

The Valve,check, cataloged under National Stock Number 4820-01-304-8225, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-304-8225
Primary Part Number	SS70-916L-6-4J
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Status	ACTIVE
Connection Style	FLARELESS ALL ENDS
Supplementary Features	FLOW CONTROL DEVICE: DIAPHRAGM
Connection Type	THREADED EXTERNAL TUBE ALL ENDS
Style Designator	STRAIGHT THRU
Material Document and Classification	QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Operating Pressure	3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	0.438 INCHES SECOND END IN
Nominal Thread Size	0.562 INCHES FIRST END IN
Seat Angle	12.0 DEGREES ALL ENDS
Maximum Operating Temp	380.0 FAHRENHEIT SINGLE RESPONSE DEGF
Surface Treatment	PASSIVATE
Media for Which Designed	FUEL/OIL, HYDROCARBON SINGLE RESPONSE
Thread Class	3A ALL ENDS A
Material	STEEL COMP 304 OVERALL
Thread Series Designator	UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
SS70-916L-6-4J PRIMARY	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)

Reference documents

Reference	Meaning
SS70	D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

No interchangeability data on file.

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

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-304-8225?

NSN 4820-01-304-8225 is a Valve,check, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-304-8225?

NSN 4820-01-304-8225 has 1 manufacturer part number on file: SS70-916L-6-4J (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).

What are the specifications of SS70-916L-6-4J?

Key specifications for SS70-916L-6-4J: Connection Style: FLARELESS ALL ENDS; Supplementary Features: FLOW CONTROL DEVICE: DIAPHRAGM; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU. 16 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-304-8225 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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