PartsTable TECHNICAL DATA SHEET

NSN 4820-01-361-6434Government record, cited

Valve-Hand, Bypass4820-01-361-6434

NSN 4820-01-361-6434 · NIIN 013616434 · Part number 335129P01

Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 62228

Government record, cited

NSN 4820-01-361-6434 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-361-6434. Manufacturer of record part number: 335129P01.

Also searched as 4820-01-361-6434 · 4820013616434 · NIIN 013616434 · 01-361-6434 · FSC 4820 Valves, Nonpowered · CAGE 62228 · 335129P01

Nearby stock numbers ← 4820-01-361-6425 Piston, Valve · 4820-01-361-6667 Valve, Float →

4820-01-361-6434 — Valves, Nonpowered

Features

Valve-Hand,bypass — FSC 4820
General Characteristics Item Description: USED ON MODEL RS377 REFRIGERATION UNIT.
1 manufacturer part number on file
Manufacturer of record: Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc

Identification

NSN: 4820-01-361-6434
NIIN: 013616434
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 335129P01
Manufacturer: Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc

General Description

The Valve-Hand,bypass, cataloged under National Stock Number 4820-01-361-6434, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-361-6434
Primary Part Number	335129P01
Item Name	Valve-Hand,bypass
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc
Status	ACTIVE
General Characteristics Item Description	USED ON MODEL RS377 REFRIGERATION UNIT.

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
335129P01 PRIMARY	Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA)

Reference documents

Reference	Meaning
335129P01	5/9 Secondary reference Howden Fluid Systems
335129P01	3/9 Design control — primary reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design

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 4820-01-361-6434?

NSN 4820-01-361-6434 is a Valve-Hand,bypass, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-361-6434?

NSN 4820-01-361-6434 has 1 manufacturer part number on file: 335129P01 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).

What are the specifications of 335129P01?

Key specifications for 335129P01: General Characteristics Item Description: USED ON MODEL RS377 REFRIGERATION UNIT.. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-361-6434 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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