Parts Kit, Check Valve4820-01-602-4375

NSN 4820-01-602-4375 · NIIN 016024375 · Part number 0888820

Watts Regulator Company · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 79227

Government record, cited

NSN 4820-01-602-4375 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-602-4375. Manufacturer of record part number: 0888820.

Also searched as 4820-01-602-4375 · 4820016024375 · NIIN 016024375 · 01-602-4375 · FSC 4820 Valves, Nonpowered · CAGE 79227 · 0888820 · RK 774/774DCDA CK 1

Nearby stock numbers ← 4820-01-602-4361 Repair Kit, Valve · 4820-01-602-4376 Repair Kit, Valve →

4820-01-602-4375 — Valves, Nonpowered

Features

Parts Kit,check Valve — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Watts Regulator Company

Identification

NSN: 4820-01-602-4375
NIIN: 016024375
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 0888820
Manufacturer: Watts Regulator Company

General Description

The Parts Kit,check Valve, cataloged under National Stock Number 4820-01-602-4375, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-602-4375
Primary Part Number	0888820
Item Name	Parts Kit,check Valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Watts Regulator Company
Status	ACTIVE

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
RK 774/774DCDA CK 1	Watts Regulator Company (USA)
0888820 PRIMARY	Watts Regulator Company (USA)

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 4820-01-602-4375?

NSN 4820-01-602-4375 is a Parts Kit,check Valve, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-602-4375?

NSN 4820-01-602-4375 has 2 manufacturer part numbers on file: RK 774/774DCDA CK 1 (Watts Regulator Company), 0888820 (Watts Regulator Company).

What are the specifications of 0888820?

Key specifications for 0888820: End Item Identification: VLV BKFLW. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-602-4375 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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