PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-1042Valve,check

Danfoss Inc · NSN 4820-01-436-9938 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-436-9938 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-436-9938. Primary manufacturer part number: 20-1042.
Features
  • Valve,check — FSC 4820
  • Valve Operation Method: AUTOMATIC
  • 3 verified cross-references
  • Primary manufacturer: Danfoss Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-01-436-9938, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Danfoss Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-436-9938
Primary Part Number20-1042
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDanfoss Inc
StatusACTIVE
Valve Operation MethodAUTOMATIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2520-00-310-1892VT2011 INTERCHANGEABLE
Plunger,reverse Latch
Cnh Industrial America Llc Dba Cnh America
4330-01-266-5324201042 INTERCHANGEABLE
Filter Assembly,fluid
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
3460-01-516-980020-1042 INTERCHANGEABLE
Wheel,abrasive
Tri-State Precision, Inc.
Cross-Reference Index
Part NumberManufacturer
20-1042 PRIMARY Danfoss Inc (USA)
20-1042 G D Supply, Inc Dba Johnstone Supply (USA)
NRV12 Danfoss Inc (USA)
Related Parts
2520-00-310-1892INTERCHANGEABLE
PLUNGER,REVERSE LATCH
VT2011
4330-01-266-5324INTERCHANGEABLE
FILTER ASSEMBLY,FLUID
201042
3460-01-516-9800INTERCHANGEABLE
WHEEL,ABRASIVE
20-1042

Frequently Asked Questions

What is NSN 4820-01-436-9938?

NSN 4820-01-436-9938 is a Valve,check, manufactured by Danfoss Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-436-9938?

NSN 4820-01-436-9938 has 3 cross-referenced part numbers: 20-1042 (Danfoss Inc), 20-1042 (G D Supply, Inc Dba Johnstone Supply), NRV12 (Danfoss Inc).

What NSN replaces 4820-01-436-9938?

There are 3 known substitutes for 4820-01-436-9938: 2520-00-310-1892, 4330-01-266-5324, 3460-01-516-9800. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-1042?

Key specifications for 20-1042: End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Valve Operation Method: AUTOMATIC. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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