PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30-37BDiaphragm,actuator Valve,special

Carter Ralph B Co · NSN 4810-00-974-7305 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-974-7305 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-974-7305. Primary manufacturer part number: 30-37B.
Features
  • Diaphragm,actuator Valve,special — FSC 4810
  • 3 verified cross-references
  • Primary manufacturer: Carter Ralph B Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4810-00-974-7305, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Carter Ralph B Co. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4810-00-974-7305
Primary Part Number30-37B
Item NameDiaphragm,actuator Valve,special
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerCarter Ralph B Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5930-00-476-491330-37 INTERCHANGEABLE
Switch,push
Grayhill Inc
5315-00-489-5777 INTERCHANGEABLE
Nail
5950-00-586-7165722899-083 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
2920-00-656-7095FD129 INTERCHANGEABLE
Cap,ignition Distribution
Standard Motor Products
5930-00-687-20093037 INTERCHANGEABLE
Switch,lever
Switchcraft Inc.
5360-00-724-3575003037 INTERCHANGEABLE
Spring,helical,torsion
L3 Technologies, Inc. Div L3 Keo
2910-00-764-68852A6377 INTERCHANGEABLE
Filter Element,fluid
Napco International Llc Dba Napco International Inc
5950-00-799-36103037 INTERCHANGEABLE
Transformer,power
Ballantine Laboratories Inc
5815-00-859-653903037 INTERCHANGEABLE
Teletypewriter Subassembly
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
5935-00-943-67401160057P7 INTERCHANGEABLE
Connector,receptacle,electrical
Navy, United States Department of the Dba Cdsa
Cross-Reference Index
Part NumberManufacturer
30-37B Carter Ralph B Co (USA)
30-37P2 Carter Ralph B Co (USA)
30-37 Carter Ralph B Co (USA)
Related Parts
5930-00-476-4913INTERCHANGEABLE
SWITCH,PUSH
30-37
5315-00-489-5777INTERCHANGEABLE
NAIL
5950-00-586-7165INTERCHANGEABLE
TRANSFORMER,POWER
722899-083
2920-00-656-7095INTERCHANGEABLE
CAP,IGNITION DISTRIBUTION
FD129
5930-00-687-2009INTERCHANGEABLE
SWITCH,LEVER
3037
5360-00-724-3575INTERCHANGEABLE
SPRING,HELICAL,TORSION
003037
2910-00-764-6885INTERCHANGEABLE
FILTER ELEMENT,FLUID
2A6377
5950-00-799-3610INTERCHANGEABLE
TRANSFORMER,POWER
3037
5815-00-859-6539INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
03037
5935-00-943-6740INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1160057P7
6625-00-975-4485INTERCHANGEABLE
MULTIMETER
3037
5950-01-101-7883INTERCHANGEABLE
TRANSFORMER,POWER
13043887

Frequently Asked Questions

What is NSN 4810-00-974-7305?

NSN 4810-00-974-7305 is a Diaphragm,actuator Valve,special, manufactured by Carter Ralph B Co, classified under FSC 4810 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4810-00-974-7305?

NSN 4810-00-974-7305 has 3 cross-referenced part numbers: 30-37B (Carter Ralph B Co), 30-37P2 (Carter Ralph B Co), 30-37 (Carter Ralph B Co).

What NSN replaces 4810-00-974-7305?

There are 12 known substitutes for 4810-00-974-7305: 5930-00-476-4913, 5315-00-489-5777, 5950-00-586-7165 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30-37B?

Key specifications for 30-37B: Part Name Assigned by Controlling Agency: DIAPHRAGM,VALVE,SPECIAL SHAPED; Special Features: NYLON REINFORCED; 12.625 IN. OD BY 4.875 IN ID; 1.625 IN. O/A H IN. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4810-00-974-7305 still in active supply?

NSN 4810-00-974-7305 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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