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4720-00-781-7819

Find complete technical information, availability, and procurement data for: 4720-00-781-7819

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4720-00-781-7819
Federal Supply Group
Pipe, Tubing, Hose, and Fittings
Federal Supply Classification
4720 Hose and Flexible Tubing
National Stock Number
4720-00-781-7819
Item Name Code
20311
Assigment Date
01/05/1968 (58 years ago)

A valve with a stem that may be mechanically actuated to three different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the third position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also valve, lift-check and valve, stop-check.

round cross-sectional shape style, 0.375 inches nominal inside diameter, -65.0 fahrenheit single response temp rating, 0.750 inches nominal outside diameter, right-hand 1st end thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style
round
Thread Direction
right-hand 1st end
Inside Diameter
0.375 inches nominal
Temp Rating
-65.0 fahrenheit single response
Outside Diameter
0.750 inches nominal
Minimum Inside Bending Radius
3.750 inches
Connection Style
plain 1st end
End Connection Design
straight 1st end
End Fitting Component And Material
complete fitting steel all ends
Fitting Component And Surface Treatment
complete fitting cadmium 1st end
Connection Type
threaded external pipe 1st end
Burst Test Pressure
900.0 pounds per square inch
Layer Composition And Location
1st layer braided cotton cord or 1st layer braided fabric or 1st layer braided synthetic cord and 2nd layer braided cotton cord or 2nd layer braided fabric or 2nd layer braided synthetic cord and outer layer molded rubber, chloroprene
Maximum Operating Pressure
225.0 pounds per square inch
Nominal Thread Size
0.500 inches 1st end
Outer Covering Environmental Protection
ozone resistant
Vacuum In Torr
50.8
Inside Surface Condition
smooth
Measuring Method And Length
158.500 inches nominal overall
Special Features
external protection type and location- both ends spring guard, round steel coil , inner conveying tube material-rubber, synthetic
Media For Which Designed
air single response
Thread Series Designator
ptf-sae short 1st end

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
7954875 Nonmetallic Hose Assembly
7954877 Nonmetallic Hose Assembly

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4720-00-781-7819?
The FSCG of the NSN 4720-00-781-7819 is 4720
Does NSN 4720-00-781-7819 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4720-00-781-7819 contain precious materials?
Item does not contain precious metal.
Does NSN 4720-00-781-7819 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4720-00-781-7819 was assigned to the Federal Catalog?
It was assigned 58 years ago, on Fri, Jan 5, 1968

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