Hose pump elements

NBR (Buna N) hose

Overview

NBR (Buna N) hose elements

The hose element is critical to ensure pump performance, durability and efficiency. Bredel composite reinforced hoses are constructed from high-quality compounded rubbers reinforced with up to four individual layers of braided nylon, and finished by high-precision machining. Inner and outer layers are extruded and, after construction, machined to ensure critical tolerances are maintained.

Resistant to oils, greases, alkalis and detergents.

Perfect 100 % compression eliminates slippage which can destroy shear sensitive product and reduce metering accuracy.

Examples of compatible media:

  • Sludge with fractions of hydrocarbons
  • Polyaluminium chloride

Chemical Compatibility Guide

Features and benefits

  • Tight tolerances for low stress on bearings
  • Perfect compression for long life
  • Excellent suction capability up to 9 mWC (354 inWC)
  • High pressure capability 16 bar (232 psi)
  • Repeatable volumetric accuracy to ± 1 %
  • Consistent capacity independent of varying suction and discharge conditions
  • Exceptional performance when handling high viscosity product
  • Max. fluid temperature: 80 ºC (176 ºF), Min. fluid temperature: -10 ºC (14 ºF)

Technical summary

Max. operating pressure16 bar
Max. operating pressure232 psi
Bore size10 - 100 mm
Bore size0.39 - 3.94 in
Wall thickness8.5 - 22 mm
Wall thickness0.337 - 0.866 in

Technical Summary table lists features available within the range. See ‘Specifications’ tab for model specific information.

Specifications

Technical specifications

NBR (Buna N) 10NBR (Buna N) 15NBR (Buna N) 20NBR (Buna N) 25NBR (Buna N) 32NBR (Buna N) 40NBR (Buna N) 50NBR (Buna N) 65NBR (Buna N) 80NBR (Buna N) 100
Max. operating pressure12 bar12 bar10 bar16 bar16 bar16 bar16 bar16 bar16 bar16 bar
Max. operating pressure174 psi174 psi145 psi232 psi232 psi232 psi232 psi232 psi232 psi232 psi
Max. suction capability9 mWC9 mWC9 mWC9 mWC9 mWC9 mWC9 mWC9 mWC8 mWC6 mWC
Max. suction capability 354 inWC354 inWC354 inWC354 inWC354 inWC354 inWC354 inWC354 inWC315 inWC236 inWC
Suction capability (80% Flow rate)8 mWC8 mWC8 mWC8 mWC8 mWC8 mWC6 mWC6 mWC5 mWC4 mWC
Suction capability (80% Flow rate)315 inWC315 inWC315 inWC315 inWC315 inWC315 inWC236 inWC236 inWC197 inWC157 inWC
Operating temperature range -20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C-20 °C to 45 °C
Operating temperature range -4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F-4 °F to 113 °F
Fluid temperature range -10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C-10 °C to 80 °C
Fluid temperature range 14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F14 °F to 176 °F
Bore size10 mm15 mm19 mm25 mm32 mm40 mm50 mm65 mm80 mm100 mm
Bore size0.39 in0.59 in0.75 in0.98 in1.26 in1.57 in1.97 in2.56 in3.15 in3.94 in
Wall thickness10.5 mm10.5 mm8.5 mm14.1 mm14.5 mm13.2 mm15 mm17.1 mm21 mm22 mm
Wall thickness0.413 in0.413 in0.337 in0.555 in0.571 in0.52 in0.591 in0.673 in0.827 in0.866 in
Length510 mm755 mm755 mm1005 mm1250 mm1490 mm1820 mm2340 mm2780 mm3280 mm
Length20.1 in29.7 in29.7 in39.9 in49.2 in58.7 in71.7 in91.1 in109.4 in129.1 in
Weight0.4 kg0.8 kg0.6 kg2 kg3 kg3.5 kg6 kg12 kg21 kg30 kg
Weight0.88 lbs1.76 lbs1.32 lbs4.41 lbs6.61 lbs7.72 lbs13.23 lbs26.46 lbs46.3 lbs66.14 lbs
Your local Bredel sales office/distributor can advise the right hose for your application. For best pump performance use Bredel Genuine Hose Lubricant (NSF Non food Compound Program Listed, category H1)

Hose composition

Materials of construction

MaterialNBR
Inner layerNBR
Outer layerNatural rubber (NR)

Literature

Brochures

  1. Bredel pumps (US).pdf
    PDF - 2.6mb

Datasheet

  1. NBR (Buna N) 25 datasheet (US).pdf
    PDF - 832.2kb
  2. NBR (Buna N) 32 datasheet (US).pdf
    PDF - 832.3kb
  3. NBR (Buna N) 50 datasheet (US).pdf
    PDF - 832.2kb
  4. NBR (Buna N) 20 datasheet (US).pdf
    PDF - 832.2kb
  5. NBR (Buna N) 40 datasheet (US).pdf
    PDF - 832.2kb
  6. NBR (Buna N) 10 datasheet (US).pdf
    PDF - 832.2kb
  7. NBR (Buna N) 100 datasheet (US).pdf
    PDF - 832.2kb
  8. NBR (Buna N) 15 datasheet (US).pdf
    PDF - 832.2kb
  9. NBR (Buna N) 65 datasheet (US).pdf
    PDF - 832.3kb
  10. NBR (Buna N) 80 datasheet (US).pdf
    PDF - 832.3kb

Order Information

Product codes

 

Label codes

A

Pump type

B

Re-order number

C

Bore size

D

Material of the inner layer

E

Maximum permitted pressure

F

Factory code [material; year; month]

 

On one end of each hose the factory code [material; year; month] and the batch number are engraved.

Year: last digit (7 = 2017)

Month: A = Jan, E = May

Material: E = F-NBR, M = CSM, NM or NT = NR, P = NBR, S = EPDM

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