PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

288A-C 1/2INValve,vacuum Breaking

Watts Regulator Company · NSN 4820-01-108-6983 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-108-6983 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-108-6983. Primary manufacturer part number: 288A-C 1/2IN.
Features
  • Valve,vacuum Breaking — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Watts Regulator Company
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-108-6983, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Watts Regulator Company. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,vacuum Breaking
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersWatts Regulator Company (CAGE 79227); Envirovac Inc Dba Monogram Systems-Rockford Div (CAGE 58568); Chicago Faucet Co the (CAGE 96165); Evac North America Inc (CAGE 47WD8)
Technical Specifications
ParameterValue
NSN4820-01-108-6983
Primary Part Number288A-C 1/2IN
Item NameValve,vacuum Breaking
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWatts Regulator Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5945-00-025-3457PM1207PC39 INTERCHANGEABLE
Relay,electromagnetic
Marine Electric Systems Inc
3110-00-100-0343 INTERCHANGEABLE
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3110-00-100-617904746E INTERCHANGEABLE
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Hyster-Yale Group, Inc. Dba Yale Materials Handling
4820-00-274-364615-416 INTERCHANGEABLE
Cock,plug
Dresser Industries Inc Leroi Div
2990-00-443-4796M0M12-0100 INTERCHANGEABLE
Muffler,exhaust
Donaldson Company, Inc.
2815-00-516-91962A3447 INTERCHANGEABLE
Valve,poppet,engine
Caterpillar Inc Div Caterpillar Defense
4240-00-941-1341893 INTERCHANGEABLE
Strap,wrist Grounding
Stewart R. Browne Mfg. Co., Inc.
5330-01-037-591225071 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
2930-01-406-5270 INTERCHANGEABLE
Radiator,engine Coolant
5365-01-569-0116892 INTERCHANGEABLE
Spacer,sleeve
Keystone Electronics Corp
Cross-Reference Index
Part NumberManufacturer
288A-C 1/2IN PRIMARY Watts Regulator Company (USA)
2502996 Envirovac Inc Dba Monogram Systems-Rockford Div (USA)
892 Chicago Faucet Co the (USA)
2502996 Evac North America Inc (USA)
Related Parts
5945-00-025-3457INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
PM1207PC39
3110-00-100-0343INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
3110-00-100-6179INTERCHANGEABLE
BALL,BEARING
04746E
4820-00-274-3646INTERCHANGEABLE
COCK,PLUG
15-416
2990-00-443-4796INTERCHANGEABLE
MUFFLER,EXHAUST
M0M12-0100
2815-00-516-9196INTERCHANGEABLE
VALVE,POPPET,ENGINE
2A3447
4240-00-941-1341INTERCHANGEABLE
STRAP,WRIST GROUNDING
893
5330-01-037-5912INTERCHANGEABLE
SEAL,PLAIN ENCASED
25071
2930-01-406-5270INTERCHANGEABLE
RADIATOR,ENGINE COOLANT
5365-01-569-0116INTERCHANGEABLE
SPACER,SLEEVE
892
1005-01-573-3895INTERCHANGEABLE
SAFETY,SMALL ARMS
892
5330-01-573-9721INTERCHANGEABLE
SEAL,PLAIN
892

Frequently Asked Questions

What is NSN 4820-01-108-6983?

NSN 4820-01-108-6983 is a Valve,vacuum Breaking, manufactured by Watts Regulator Company, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-108-6983?

NSN 4820-01-108-6983 has 4 cross-referenced part numbers: 288A-C 1/2IN (Watts Regulator Company), 2502996 (Envirovac Inc Dba Monogram Systems-Rockford Div), 892 (Chicago Faucet Co the), 2502996 (Evac North America Inc).

What NSN replaces 4820-01-108-6983?

There are 12 known substitutes for 4820-01-108-6983: 5945-00-025-3457, 3110-00-100-0343, 3110-00-100-6179 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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