Disk, Valve4820-00-471-8355

NSN 4820-00-471-8355 · NIIN 004718355 · Part number 135C37

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

Government record, cited

NSN 4820-00-471-8355 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-471-8355. Manufacturer of record part number: 135C37.

Also searched as 4820-00-471-8355 · 4820004718355 · NIIN 004718355 · 00-471-8355 · FSC 4820 Valves, Nonpowered · CAGE 79227 · 135C37

Nearby stock numbers ← 4820-00-471-8354 Diaphragm, Valve, Flat · 4820-00-471-8356 Seat, Valve →

4820-00-471-8355 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Outside Diameter: 1.188 INCHES NOMINAL IN
Style Designator: PLAIN
Inside Diameter: 0.188 INCHES NOMINAL IN
Material: ELASTOMER CARBOXYLIC
1 manufacturer part number on file
Manufacturer of record: Watts Regulator Company

Identification

NSN: 4820-00-471-8355
NIIN: 004718355
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 135C37
Manufacturer: Watts Regulator Company

General Description

The Disk,valve, cataloged under National Stock Number 4820-00-471-8355, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. 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	4820-00-471-8355
Primary Part Number	135C37
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Watts Regulator Company
Status	ACTIVE
Outside Diameter	1.188 INCHES NOMINAL IN
Style Designator	PLAIN
Inside Diameter	0.188 INCHES NOMINAL IN
Material	ELASTOMER CARBOXYLIC

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
135C37 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 4820-00-471-8355?

NSN 4820-00-471-8355 is a Disk,valve, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-00-471-8355?

NSN 4820-00-471-8355 has 1 manufacturer part number on file: 135C37 (Watts Regulator Company).

What are the specifications of 135C37?

Key specifications for 135C37: Overall Height: 0.188 INCHES NOMINAL IN; Outside Diameter: 1.188 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 0.188 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4820-00-471-8355 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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