METAL HOSE & BELLOWS - Formely Hydraquip Metal Hose
PLUMBING & COOLING - Formely Hydraquip Braided Hose

Male x Male Hose Assembly

Building Services Hose Assembly with an EPDM Rubber inner and 304 Stainless Steel Overbraid, Complete with Male End Fittings. Stainless Steel rubber hose assemblies available from 200mm in length, please call 0845 260 4334 to speak to one of our team for bespoke hose assemblies. Manufactured in the UK.

Part NumberBore Size(mm)Length
BX13MCMC6013600
BX13MCMC4513450
BX19MCMC3019300
BX19MCMC4519450
BX19MCMC6019600
BX25MCMC3025300
BX25MCMC4525450
BX25MCMC6025600
BX32MCMC3032300
BX32MCMC6032600
BX32MCMC4532450
BX40MCMC3040300
BX40MCMC4540450
BX40MCMC6040600
BX50MCMC3050300
BX50MCMC4550450
BX50MCMC6050600

MATERIALS OF CONSTRUCTION

Hose

EPDM Rubber

Braid

304 Stainless Steel

Washer

Fibre

Insulation

N/A

DESCRIPTION

Hydraflex’s building service hose offers a versatile and practical application for fan coils and building services, with a wide variety of benefits. The non-toxic EPDM rubber hose is enclosed in a 304 stainless steel overbraid and secures brass fittings with a crimpled ferrule to offer an assembly that meets or exceeds the BSRIA Flexible Hoses Standard BG4-2004. Assemblies are supplied with fibre washers where required.

APPLICATIONS

  • Fan Coils
  • Heating and Ventilation
  • Building Services
  • Non WRAS Plumbing
  • Domestic
  • Other

QUALITY & ASSOCIATED STANDARDS

Every assembly produced at Hydraflex undergoes a rigorous visual inspection, to ensure that only quality products are supplied. See the below standards that Hydraflex meet:​
  • Manufactured under ISO 9001:2015 Procedures BSRIA BG4-2004
  • RoHS 3 (EU
  • 2015/863)
  • EPP
  • REACH
  • BFPA
  • 100% pressure tested and certificate available on
    request

FITTING SELECTION

HOSE DATA

ASSEMBLY MEASUREMENTS

Diagram 3 displaying the overall length and cut length of a hose assembly

HOSE REDUCTION THROUGH FITTINGS

The arrow on drawing D2 denotes the ‘R’ measurement showing the ‘Minimum Bore Through Fittings (mm)’ which is reduced through the fitting tail, with a tolerance of +/- 0.2mm. The below measurements represent the minimum bore of each DN size; however, fittings will vary in bore size. For further information regarding this please contact out technical department.

GEOMETRY AND MINIMUM BEND RADIUS

WORKING AND THEORECTICAL BURST PRESSURE

PRESSURE DROP

Schedule 1

Schedule 1

Formula: Pc = (TxL) + R (in mbar)

Pc = Pressure Drop in mbar
T = Pressure drop in mbar for one meter of hoses according to its flow capacity in M3/h (Schedule 1)
L = Hose Length in meters
R = Pressure drop in mbar caused by two fittings (male x female), same condition than ‘T’ (Schedule 2)

Flexible hose with one straight and one elbow fittings= R x 1.5
Flexible hose with two elbow fittings = R x 3
Example:
Flexible hose DN13 length 500mm 1 FP – MC, flow capacity 1000 l/h
Pc = (26 mbar/m x 0.5m) + 23 mbar = 36 mbar
Flexible hose DN25 length 800 1 FP – FPN, flow capacity 1500 l/h
Pc = (3mbar/m x 0.8m) + (2.5 mbar x 1.5) = 9 mbar

Note: ‘T’ value only valid for hoses installed straight. Installation with bend can cause pressure drop relative to decrease in bend radius.

Flexible Hose Installation Guidance Notes

Prior to Installation

  • Ensure that STAMPED is followed prior to fittings any flexible hose to ensure that the hose is fit for purpose.
    Taking into consideration the maximum working parameters for operating and testing including; pressure, temperature, environment, medium. Making sure any additional factors are considered prior to installation and ensuring the hose assembly meets or exceeds the parameters of the application e.g. Consider using elbow fittings where tight bending is required.
  • This information must not be assumed and is essential the correct due diligence has been undertaken. 

Installation

  • Before fitting ensure that there is no visible damage to the hose (if in doubt do not proceed to fitting the assembly).
  • Ensure there is a slack on the hose with straight ends, as a tightly fitted hose may fail prematurely.
  • Ensure that bend radii of the hose are not exceeded and there is sufficient length of hose to allow for a smooth curve. Do not bend hoses near to the crimped end fitting or twist and/or stretch hoses.
  • Ensure where fittings with washers are used that the mating part is not sharp or uneven as this may damage the washer or prevent a secure seal.
  • Ensure any hoses requiring insulation have sealed ends, failure to do so is likely to result in a build-up of moisture, resulting in corrosion and hose failure.
  • Do make sure that the hose will not be rubbing on any edges once installed.
  • Do use the correct type and size of tool when making the connections and ensure you do not over tighten fittings; over tightening may result in stress corrosion cracking (SCC).

N.B. Please be aware that external factors, included but not limited to heat, flux, solder, chemicals and condensation are likely to result in premature failure of a hose assembly.

Post Installation Check List

  • Ensure circuits are flushed to clear any debris in accordance with current standards.
  • Pressure test the circuit to ensure all connections are sound and secure in accordance with current standards.
  • Hoses should be inspected at regular intervals for signs of corrosion or damage.

While this is an extensive list it is not exhaustive and should be used solely for guidance, if you require further information or clarification then please contact our technical support team. Failure to observe and comply with the above guidance notes may result in a hose failure and invalidate any warranty.

 

Further information

For anymore information that you may require then please contact one of our team.

Tel: 0845 260 4334  Email: [email protected]

Technical Info


11 Stirling Park, Laker Road,
Rochester
ME1 3QR, United Kingdom

+44 (0)845 260 4334
[email protected]

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