PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34429-11Seat,valve

Mark Controls Corp Pacific Valves Div · NSN 4820-01-160-6320 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-160-6320 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-160-6320. Primary manufacturer part number: 34429-11.
Features
  • Seat,valve — FSC 4820
  • Under Flange Height: 1.031 INCHES MINIMUM AND 1.036 INCHES MAXIMUM IN
  • Criticality Code Justification: ZZZY
  • Seating Surface Shape: ANGULAR
  • Material: STEEL CORROSION RESISTING OVERALL
  • Style Designator: PLAIN FLANGED
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • Flange Seat to Disk End Height: 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-160-6320, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mark Controls Corp Pacific Valves Div. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-160-6320
Primary Part Number34429-11
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMark Controls Corp Pacific Valves Div
StatusACTIVE
Under Flange Height1.031 INCHES MINIMUM AND 1.036 INCHES MAXIMUM IN
Criticality Code JustificationZZZY
Seating Surface ShapeANGULAR
MaterialSTEEL CORROSION RESISTING OVERALL
Style DesignatorPLAIN FLANGED
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Flange Seat to Disk End Height0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
Body Outside Diameter2.566 INCHES MINIMUM AND 2.567 INCHES MAXIMUM IN
Seat Angle in Deg30.000 NOMINAL
Flange Diameter2.875 INCHES NOMINAL IN
Body Inside Diameter1.938 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5962-00-024-0653 INTERCHANGEABLE
Microcircuit,digital
5330-00-027-9346 INTERCHANGEABLE
Insulation,thermal,special Purpo
5315-00-298-20677437 INTERCHANGEABLE
Pin,straight,headless
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5998-00-329-85817437 INTERCHANGEABLE
Circuit Card Assembly
Drs Signal Solutions, Inc.
4730-00-495-62267437 INTERCHANGEABLE
Tee,pipe
Fwd Seagrave Holdings Lp
2530-00-545-5406212227N INTERCHANGEABLE
Dummy Coupling,automotive Air Br
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5935-00-847-9683952141-1 INTERCHANGEABLE
Adapter,connector
Raytheon Company Dba Raytheon Co
5962-01-171-2151 INTERCHANGEABLE
Microcircuit,digital
1005-01-251-98237437MIL INTERCHANGEABLE
Bolt Assembly
O F Mossberg & Sons Inc
6530-01-618-74377437 INTERCHANGEABLE
Rod,intravenous-Irrigation Conta
Brenner Metal Products Corp Div Brenner Metal Products
Cross-Reference Index
Part NumberManufacturer
34429-11 Mark Controls Corp Pacific Valves Div (USA)
7437 Katzenstein L and Co (USA)
Related Parts
5962-00-024-0653INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5330-00-027-9346INTERCHANGEABLE
INSULATION,THERMAL,SPECIAL PURPO
5315-00-298-2067INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
7437
5998-00-329-8581INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
7437
4730-00-495-6226INTERCHANGEABLE
TEE,PIPE
7437
2530-00-545-5406INTERCHANGEABLE
DUMMY COUPLING,AUTOMOTIVE AIR BR
212227N
5935-00-847-9683INTERCHANGEABLE
ADAPTER,CONNECTOR
952141-1
5962-01-171-2151INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
1005-01-251-9823INTERCHANGEABLE
BOLT ASSEMBLY
7437MIL
6530-01-618-7437INTERCHANGEABLE
ROD,INTRAVENOUS-IRRIGATION CONTA
7437

Frequently Asked Questions

What is NSN 4820-01-160-6320?

NSN 4820-01-160-6320 is a Seat,valve, manufactured by Mark Controls Corp Pacific Valves Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-160-6320?

NSN 4820-01-160-6320 has 2 cross-referenced part numbers: 34429-11 (Mark Controls Corp Pacific Valves Div), 7437 (Katzenstein L and Co).

What NSN replaces 4820-01-160-6320?

There are 10 known substitutes for 4820-01-160-6320: 5962-00-024-0653, 5330-00-027-9346, 5315-00-298-2067 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 34429-11?

Key specifications for 34429-11: Under Flange Height: 1.031 INCHES MINIMUM AND 1.036 INCHES MAXIMUM IN; Criticality Code Justification: ZZZY; Seating Surface Shape: ANGULAR; Material: STEEL CORROSION RESISTING OVERALL. 11 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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