Diaphragm, Actuator Valve, Special4820-01-221-1559

NSN 4820-01-221-1559 · NIIN 012211559 · Part number 1636-56

Petrometer Corp · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 46707

Government record, cited

NSN 4820-01-221-1559 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-221-1559. Manufacturer of record part number: 1636-56.

Also searched as 4820-01-221-1559 · 4820012211559 · NIIN 012211559 · 01-221-1559 · FSC 4820 Valves, Nonpowered · CAGE 46707 · 1636-56

Nearby stock numbers ← 4820-01-221-1558 Stem, Fluid Valve · 4820-01-221-1568 Valve, Gate →

4820-01-221-1559 — Valves, Nonpowered

Features

Diaphragm,actuator Valve,special — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Petrometer Corp

Identification

NSN: 4820-01-221-1559
NIIN: 012211559
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1636-56
Manufacturer: Petrometer Corp

General Description

The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-221-1559, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Petrometer Corp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Diaphragm,actuator Valve,special
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Petrometer Corp (CAGE 46707)

Technical Specifications

Parameter	Value
NSN	4820-01-221-1559
Primary Part Number	1636-56
Item Name	Diaphragm,actuator Valve,special
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Petrometer Corp
Status	ACTIVE

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
1636-56 PRIMARY	Petrometer Corp (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 4820-01-221-1559?

NSN 4820-01-221-1559 is a Diaphragm,actuator Valve,special, manufactured by Petrometer Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-221-1559?

NSN 4820-01-221-1559 has 1 manufacturer part number on file: 1636-56 (Petrometer Corp).

Is NSN 4820-01-221-1559 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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