NSN 4820-01-442-3920 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-442-3920. Manufacturer of record part number: STYLE B 2.0IN 20T70 PSI PC8.
Also searched as4820-01-442-3920 ·
4820014423920 ·
NIIN 014423920 ·
01-442-3920 ·
FSC 4820 Valves, Nonpowered · CAGE 64042 · STYLE B 2.0IN 20T70 PSI PC8
Pressure Rating: 20.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 70.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Temp Rating: 150.0 FAHRENHEIT MAXIMUM DEGF
Media for Which Designed: AIR OR WATER
Material: RUBBER CHLOROPRENE CLASS CR AND PLASTIC POLYAMIDE NYLON
1 manufacturer part number on file
Manufacturer of record: Watson Mcdaniel Co
Identification
NSN: 4820-01-442-3920
NIIN: 014423920
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: STYLE B 2.0IN 20T70 PSI PC8
Manufacturer: Watson Mcdaniel Co
General Description
The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-442-3920, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watson Mcdaniel Co. Government technical data includes 4 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-442-3920
Primary Part Number
STYLE B 2.0IN 20T70 PSI PC8
Item Name
Diaphragm,valve,flat
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Watson Mcdaniel Co
Status
ACTIVE
Pressure Rating
20.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 70.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Temp Rating
150.0 FAHRENHEIT MAXIMUM DEGF
Media for Which Designed
AIR OR WATER
Material
RUBBER CHLOROPRENE CLASS CR AND PLASTIC POLYAMIDE NYLON
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 4820-01-442-3920?
NSN 4820-01-442-3920 is a Diaphragm,valve,flat, manufactured by Watson Mcdaniel Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-442-3920?
NSN 4820-01-442-3920 has 1 manufacturer part number on file: STYLE B 2.0IN 20T70 PSI PC8 (Watson Mcdaniel Co).
What are the specifications of STYLE B 2.0IN 20T70 PSI PC8?
Key specifications for STYLE B 2.0IN 20T70 PSI PC8: Pressure Rating: 20.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 70.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Temp Rating: 150.0 FAHRENHEIT MAXIMUM DEGF; Media for Which Designed: AIR OR WATER; End Item Identification: 1340-01-097-6365; MARS CLASS AFS. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-442-3920 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.