Product Details | FLAT VALVE DIAPHRAGM

4820-00-931-7129 An item in the form of one or more thin flexible sheets normally designed to form a tight seal between chambers of a valve, and to transmit motion to a valve disk either directly or through a mechanical linkage. The surface of the item(s) may not be formed or molded to have a beaded or rolled edge, ribs, or any other raised surfaces. The item may contain bolt holes and/or a center hole. Excludes DIAPHRAGM, VALVE, SPECIAL SHAPED and GASKET.20316600062Aircraft Air Conditioning, Heating, and Pressurizing Equipment48100015Valves, Powered48200018Valves, Nonpowered

Part Alternates: 675083SPCL, 6750-83SPCL, 4820-00-931-7129, 00-931-7129, 4820009317129, 009317129

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 23 SEP 1966 00-931-7129

Demand History | NSN 4820-00-931-7129

Part Number Request Date QTY Origin
4820-00-931-7129 2016-06-158 66 DIBBS

Cross Reference | NSN 4820-00-931-7129

Part Number Cage Code Manufacturer
6750-83SPCL 41387 SIEMENS ENERGY & AUTOMATION
6750-83SPCL 81412 TREADWELL CORPORATION

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Technical Data | NSN 4820-00-931-7129

Characteristic Specifications
MATERIAL RUBBER, SYNTHETIC
STYLE DESIGNATOR G49 FLAT
HOLE DIAMETER 0.200 INCHES NOMINAL
OUTSIDE DIAMETER 2.250 INCHES NOMINAL
BOLT CIRCLE DIAMETER 1.830 INCHES NOMINAL
MATERIAL THICKNESS 0.025 INCHES NOMINAL
CENTER HOLE DIAMETER 0.130 INCHES NOMINAL
BOLT HOLE QUANTITY 12
MEDIA FOR WHICH DESIGNED ANY ACCEPTABLE
PRESSURE RATING NOT RATED
TEMP RATING NOT RATED
SPECIAL FEATURES METAL INSERT IN CENTER HOLE
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS SELECTED AND TESTED FOR USE ON ELECTROLYTIC OXYGEN-NITROGEN
MANUFACTURERS CODE 81412
DESIGN CONTROL REFERENCE 6750-83SPCL

Restrictions/Controls & Freight Information | NSN 4820-00-931-7129

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 051080 FAUCETS,BIBCOCKS,GATES VALVES
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 576 unknown
Originating Activity Code HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 4820-00-931-7129

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each