PartsTable TECHNICAL DATA SHEET

NSN 4320-01-320-9121Government record, cited

Pump, Bellows4320-01-320-9121

NSN 4320-01-320-9121 · NIIN 013209121 · Part number CP1-133B

Walchem Corp · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 30128

Government record, cited

NSN 4320-01-320-9121 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-320-9121. Manufacturer of record part number: CP1-133B.

Also searched as 4320-01-320-9121 · 4320013209121 · NIIN 013209121 · 01-320-9121 · FSC 4320 Power and Hand Pumps · CAGE 30128 · CP1-133B · K3-1031-48

Nearby stock numbers ← 4320-01-320-9090 Plate, Intermediate · 4320-01-320-9132 Control, Limiter, Torque →

Features

Pump,bellows — FSC 4320
General Characteristics Item Description: BELLOWS SIZE: 1 IN; VOLTS: 230 IN
1 manufacturer part number on file
Manufacturer of record: Walchem Corp

Identification

NSN: 4320-01-320-9121
NIIN: 013209121
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: CP1-133B
Manufacturer: Walchem Corp

General Description

The Pump,bellows, cataloged under National Stock Number 4320-01-320-9121, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Walchem Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4320-01-320-9121
Primary Part Number	CP1-133B
Item Name	Pump,bellows
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Walchem Corp
Status	ACTIVE
General Characteristics Item Description	BELLOWS SIZE: 1 IN; VOLTS: 230 IN

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
CP1-133B PRIMARY	Walchem Corp (USA)

Reference documents

Reference	Meaning
CP1-133B	C/1 Advisory reference — outside the item-of-supply concept Liquid Metronics Inc
K3-1031-48	7/9 Vendor item drawing reference Kreonite Inc

No interchangeability data on file.

Other items in FSC 4320 — Power and Hand Pumps

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4320-00-001-1633

4320-00-001-1633 · Item name not on file

4320-00-001-2628

RETAINER AND PIN

4320-00-001-2629

HOUSING AND PIN

4320-00-001-2630

PUMP,CENTRIFUGAL

4320-00-001-2631

4320-00-001-2631 · Item name not on file

4320-00-001-2632

4320-00-001-2632 · Item name not on file

4320-00-001-3377

4320-00-001-3377 · Item name not on file

4320-00-001-3384

4320-00-001-3384 · Item name not on file

Frequently Asked Questions

What is NSN 4320-01-320-9121?

NSN 4320-01-320-9121 is a Pump,bellows, manufactured by Walchem Corp, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-320-9121?

NSN 4320-01-320-9121 has 1 manufacturer part number on file: CP1-133B (Walchem Corp).

What are the specifications of CP1-133B?

Key specifications for CP1-133B: General Characteristics Item Description: BELLOWS SIZE: 1 IN; VOLTS: 230 IN; End Item Identification: KME-III FILM PROCESSOR. 1 specification is documented in the U.S. Government catalog.

Is NSN 4320-01-320-9121 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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