Breathing Air Refill Hose: 7000 psi (482 bar) Rated | 3/16 in & 1/4 in

Starting at $7.60

High-pressure thermoplastic hose specifically designed for breathing air tank refill applications. 7000 psi (482 bar) working pressure at 73°F/23°C. Available in 3/16 in and 1/4 in diameter sizes. Does not include fittings. Sold by the foot; order the quantity of feet you need. For example, if you would like a 5-foot hose, you would order a quantity of "5."

527BA Series
Grouped product items
Product Name Qty
Breathing Air Refill Hose: 7000 psi (483 bar) Rated, 3/16 in | SKU 527BA-3
Breathing Air Refill Hose: 7000 psi (483 bar) Rated, 1/4 in | SKU 527BA-4

527BA Breathing Air Refill Hose is a 7000 psi (483 bar) constant working pressure hose that complies with CGA G7.1-1 Grade E Breathing Air Standards and NFPA 1901.

We custom cut this 7000 psi (482 bar) hose to customer specifications. To add installed steel, stainless steel, or brass hose ends—or if you require a fractional foot length—please contact our sales team for assistance. Compatible hose ends are listed below under "Related Products."


  • Integrated containment fill stations
  • Pneumatics
  • Mobile and stationary systems with or without cascade controls
  • Portable SCBA fill
  • Not for use as part of a SCBA systems
  • Not for use between pressure reducing regulator and breathing mask
  • This hose does not contain a conductive element; therefore, it should not be used with explosive gases such as pure oxygen and hydrogen



527BA-3 (3/16 in)

527BA-4 (1/4 in)

Nominal I.D.

3/16 in

1/4 in

Maximum O.D.

0.43 in

0.52 in

Minimum Bend Radius

1.5 in

2 in


0.05 lb/ft (0.07 kg/m)

0.07 lb/ft (0.11 kg/m)




Aramid fiber



Maximum Working Pressure

7000 psi (483 bar)

Working Temperature Range

-40°F to +180°F (-40°C to +82°C)

Minimum Burst Pressure

4x maximum working pressure at 73°F (23°C)

Vacuum Rating

28 in Hg

Crimp Fittings

CG Series