Metal Braided PTFE Hose

Metal Braided PTFE Hose

ТУ 6-05-1945-83
Road and rail transport
Engine building
Aerospace industry
Oil and gas production and processing

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A PTFE hose is a flexible pipe made of a hardened PTFE tube covered with one to three layers of stainless steel wire and, optionally, with a protective polymer coating. It is also equipped with end fittings. PTFE hoses provide a flexible link between various units of machinery and equipment operating at a high vibration level under pressure fluctuations and hydraulic shocks caused by the working fluid. PTFE makes these hoses resistant to almost all known corrosive mediums and enables them to operate at temperatures of up to + 230 °C. Plastpolymer-Prom, LLC, produces PTFE hoses for different types of machinery and equipment.

Metal braided PTFE hoses can be used:

  • in pumps for pumping corrosive liquids, crude oil, gas condensate, oil water and groundwater, as well as for delivering purified water while cooling nuclear reactors;

  • in hydraulic systems of machines and mechanisms;

  • for canning corrosive substances from machines, barrels and tanks;

  • for supplying gas and petrol at filling stations;

  • for supplying gas to household gas stoves;

  • for supplying concrete grout, paint or varnish;

  • as automotive fuel hoses.

PTFE hoses can be operated at temperatures from -60 °C to +230 °C. Subzero operating temperatures depend on the steel grade of the end fittings.

We at Plastpolymer-Prom produce the following types of PTFE hoses:

  • high-pressure hoses with two layers of wire (type V (Russian code В));

  • low-pressure hoses with a single layer of wire (type N (Russian code Н));

  • hoses of both high and low pressure with a protective polymer coating.

The main technical characteristics of metal braided PTFE hoses

Type / NPS

4

6

8

10

12

15

20

25

32

V (NP, MPa)

32.0

32.0

25.0

25.0

25.0

20.0

12.5

16.0

10

N (NP, MPa)

25.0

10.0

10.0

10.0

10.0

10.0

6.3

5.0

4.0

Metric thread

14х1.5

14х1.5

16х1.5

18х1.5

22х1.5

24х1.5

30х1.5

39х1.5

48х1.5

Length, m

27

23-25

7-9

7-9

7-9

5-7

5-7

5-7

4


The operating pressure at the maximum operating temperature (+ 230 °C) is 60-70% of the nominal pressure.

Some features of high-pressure metal braided PTFE hoses include:

  • they can operate at a bend of up to 10 NPS (with NPS up to 15mm) or up to 20 NPS (with NPS more than 15 mm);

  • they are pressure-tight at 1.5 NP;

  • they have a 3:1 safety factor (the burst pressure is 3 times the nominal pressure).