PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3056-01Diaphragm,valve,flat

Watts Automatic Control Valve Inc · NSN 4820-00-167-4211 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-167-4211 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-167-4211. Primary manufacturer part number: 3056-01.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Hole Diameter: 0.219 INCHES NOMINAL IN
  • Material Thickness: 0.025 INCHES NOMINAL IN
  • Bolt Hole Quantity: 8
  • Material: RUBBER CHLOROPRENE CLASS CR
  • Bolt Circle Diameter: 2.406 INCHES NOMINAL IN
  • Outside Diameter: 2.719 INCHES NOMINAL IN
  • Center Hole Diameter: 0.250 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Chloroprene Class Cr construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-167-4211, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Watts Automatic Control Valve Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-167-4211
Primary Part Number3056-01
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWatts Automatic Control Valve Inc
StatusCANCELLED
Hole Diameter0.219 INCHES NOMINAL IN
Material Thickness0.025 INCHES NOMINAL IN
Bolt Hole Quantity8
MaterialRUBBER CHLOROPRENE CLASS CR
Bolt Circle Diameter2.406 INCHES NOMINAL IN
Outside Diameter2.719 INCHES NOMINAL IN
Center Hole Diameter0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
1650-00-376-612830561 INTERCHANGEABLE
Body,flutter Dampener
John Crane, Inc
5905-00-624-8912 INTERCHANGEABLE
Resistor,variable,wire Wound,non
2915-00-673-490801W210-218 INTERCHANGEABLE
Tube,perforated
Falls Filtration Technologies, Inc.
5962-00-673-76043056-01 INTERCHANGEABLE
Microcircuit,linear
Burr-Brown Corp
3655-00-792-09373283-1 INTERCHANGEABLE
Purging Unit,air,liquid Oxygen S
King Nutronics Corporation Dba King Nutronics
5998-01-114-8778 INTERCHANGEABLE
Circuit Card Assembly
3040-01-151-393932831 INTERCHANGEABLE
Head,linear Actuating Cylinder
Dana Commercial Vehicle Products, Llc
4820-01-272-393030561 INTERCHANGEABLE
Stem,fluid Valve
Schneider Electric Systems Usa Inc
Cross-Reference Index
Part NumberManufacturer
3056-1 Watts Automatic Control Valve Inc (USA)
3056-1 Muesco Inc Dba Muesco Mallay Inc (USA)
3283-1 Muesco Inc Dba Muesco Mallay Inc (USA)
3056-01 PRIMARY Watts Automatic Control Valve Inc (USA)
Related Parts
1650-00-376-6128INTERCHANGEABLE
BODY,FLUTTER DAMPENER
30561
5905-00-624-8912INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
2915-00-673-4908INTERCHANGEABLE
TUBE,PERFORATED
01W210-218
5962-00-673-7604INTERCHANGEABLE
MICROCIRCUIT,LINEAR
3056-01
3655-00-792-0937INTERCHANGEABLE
PURGING UNIT,AIR,LIQUID OXYGEN S
3283-1
5998-01-114-8778INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
3040-01-151-3939INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
32831
4820-01-272-3930INTERCHANGEABLE
STEM,FLUID VALVE
30561

Frequently Asked Questions

What is NSN 4820-00-167-4211?

NSN 4820-00-167-4211 is a Diaphragm,valve,flat, manufactured by Watts Automatic Control Valve Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-167-4211?

NSN 4820-00-167-4211 has 4 cross-referenced part numbers: 3056-1 (Watts Automatic Control Valve Inc), 3056-1 (Muesco Inc Dba Muesco Mallay Inc), 3283-1 (Muesco Inc Dba Muesco Mallay Inc), 3056-01 (Watts Automatic Control Valve Inc).

What NSN replaces 4820-00-167-4211?

There are 8 known substitutes for 4820-00-167-4211: 1650-00-376-6128, 5905-00-624-8912, 2915-00-673-4908 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3056-01?

Key specifications for 3056-01: Hole Diameter: 0.219 INCHES NOMINAL IN; Material Thickness: 0.025 INCHES NOMINAL IN; Bolt Hole Quantity: 8; Material: RUBBER CHLOROPRENE CLASS CR. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-167-4211 still in active supply?

NSN 4820-00-167-4211 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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