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Unisource SF21 Stainless Steel Flexible Metal Hose Assembly, 1-1/2" Stainless Steel NPT Male Connection, 472 PSI Maximum Pressure, 36" Length, 1-1/2" ID

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Product Specifications
Compatible Material
For Use With Product Type
Flexible Metal
Inside Diameter
1-1/2  inches
Maximum Bend Radius
Maximum Pressure
472  PSI
Number of Items
Outside Diameter
2-9/32  inches
Overall Length
36  inches
Part Number
Size Name
Specification for this product family (See all  products)
Material Type
Stainless Steel
Color Name
Brand Name
Manufacturer Series Number
Upper Temperature Range
1500  Degrees Fahrenheit
Exterior Finish
Smooth Finish
Connector Type
Style Name
Stainless Steel NPT Male
System of Measurement

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Key Features

  • Flexible stainless steel hose assembly for use in cryogenic liquid transfer operations
  • Corrugated 321 stainless steel tube for flexibility and resistance to extreme temperatures
  • Single-braid 300 series stainless steel reinforced cover for strength
  • Maximum temperature rating of 1,500 degrees F
  • Two factory-installed stainless steel male NPT connections

Package Details

Shipping Weight: 3.8 pounds
Package Size: 36 x 2.5 x 2.5 inches

Product Description

The Unisource SF21 stainless steel cryogenic liquid transfer hose, suitable for use in cryogenic liquid or liquefied gas transfer operations, is constructed with a corrugated 321 stainless steel tube for flexibility and resistance to extreme temperatures, and a single-braid 300 series stainless steel reinforced cover for the strength necessary to reach its maximum pressure rating. This hose assembly remains flexible in temperatures ranging from low cryogenic temperatures to 1,500 degrees F. It comes equipped with two factory-installed stainless steel male National Pipe Thread Taper (NPT) threaded connections. This hose is suitable for use in a wide range of applications, including medical, food transportation, electrical equipment cooling, and others.

Industrial hoses and hose assemblies transfer or convey air or liquid in hose systems. When selecting industrial hoses or hose assemblies, use the STAMPED method to help determine the type of hose needed:

S= Size (ID, OD, and length)
T= Temperature (maximum and minimum temperatures of material being transported)
A= Application (industry or process)
M= Material (to be conveyed, type and concentration)
P= Pressure (maximum working pressure)
E= Ends (type of end connectors or couplings on hose)
D= Delivery method (volume and velocity)
The inside diameter of the hose must be adequate to keep pressure loss to a minimum and avoid damage to the hose due to heat generation or excessive turbulence. The hose must be capable of withstanding the minimum and maximum temperatures that occur within the hose system. Some applications require specialized oils or chemicals to be conveyed through the system. In this case, hose selection must ensure compatibility of the hose tube, cover, couplings and O-rings with the fluid used. Industrial hoses and hose assemblies are used in systems such as air compressors, automatic manufacturing operations, aircraft controls, and tire installation in industries including agriculture, mining, road construction, firefighting, and aviation.

Unisource manufactures industrial, hydraulic, and sanitary hoses as well as expansion joints and braided connectors. The company, founded in 1980, is headquartered in Portland, OR.

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