Hello. Sign In
Standards Store

DEF STAN 47-12

Revision I4, January 1, 1987

Complete Document

Polytetrafluoroethylene (PTFE) Hose Assemblies (Wire Reinforced) for Medium and High Pressure Fluid Systems in Aircraft

Includes all amendments and changes through Change/Amendment , October 9, 1987


View Abstract
Product Details
Document History

Detail Summary

Not Active, See comments below

EN
Additional Comments:
CANC NO S/S
Format
Details
Price (USD)
PDF
Single User
$25.00
Print
In Stock
$25.00
Add to Cart

Product Details:

  • Revision: Revision I4, January 1, 1987
  • Published Date: October 9, 1987
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: MODUK - British Defense Standards (MODUK)
  • Page Count: 58
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This Standard covers the basic requirements for the design, construction, and testing of smooth bore, wire reinforced, polytetrafluoroethylene (PTFE) hose assemblies for use in medium and high pressure fluid systems (except oxygen) in aircraft throughout a temperature range of -55°C to 232°C for medium pressure (Type 1) hoses, and of -55°C to 204°C for high pressure (Types 2 and 3) hoses.

The hose assemblies are classified according to their pressure range and/or weight characteristics as follows:

Type 1A - Medium pressure up to 8750 kPa (87.5 bar) depending on hose size

Type 1B - Medium pressure up to 10 500 kPa (105 bar)

Type 2A - High pressure up to 21 000 kPa (210 bar) , standard weight

Type 2B - High pressure up to 21 000 kPa (210 bar), lightweight

Type 3 - High pressure up to 28 000 kPa (280 bar)

(NOTE: Types 2A and 2B hose assemblies are described for convenience in terms of relative weight. However, it is possible to have hose assemblies conforming to Type 2A dimensions yet as light as equivalent sizes conforming to Type 2B dimensions.)

This Standard also includes the requirements for those hose assemblies which are required to satisfy a specified minimum grade of resistance to fire.

In addition, this Standard includes in annex C the basic requirements for the design, construction, and testing of reinforced PTFE hose (without end fittings) for use in the manufacture of PTFE hose assemblies. Annex C may, therefore, be used as a separate specification to facilitate the supply of hose (inner liner plus reinforcement) from a hose manufacturer to a hose assembly manufacturer or other user.