Hose pump elements

NBR (Buna N) hose

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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 pressure	16 bar
Max. operating pressure	232 psi
Bore size	10 - 100 mm
Bore size	0.39 - 3.94 in
Wall thickness	8.5 - 22 mm
Wall thickness	0.337 - 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) 10	NBR (Buna N) 15	NBR (Buna N) 20	NBR (Buna N) 25	NBR (Buna N) 32	NBR (Buna N) 40	NBR (Buna N) 50	NBR (Buna N) 65	NBR (Buna N) 80	NBR (Buna N) 100
Max. operating pressure	12 bar (174 psi)	12 bar (174 psi)	10 bar (145 psi)	16 bar (232 psi)	16 bar (232 psi)	16 bar (232 psi)	16 bar (232 psi)	16 bar (232 psi)	16 bar (232 psi)	16 bar (232 psi)
Max. suction capability	9 mWC (354 inWC)	9 mWC (354 inWC)	9 mWC (354 inWC)	9 mWC (354 inWC)	9 mWC (354 inWC)	9 mWC (354 inWC)	9 mWC (354 inWC)	9 mWC (354 inWC)	8 mWC (315 inWC)	6 mWC (236 inWC)
Suction capability (80% Flow rate)	8 mWC (315 inWC)	8 mWC (315 inWC)	8 mWC (315 inWC)	8 mWC (315 inWC)	8 mWC (315 inWC)	8 mWC (315 inWC)	6 mWC (236 inWC)	6 mWC (236 inWC)	5 mWC (197 inWC)	4 mWC (157 inWC)
Operating temperature	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)	-20 °C to 45 °C (-4 °F to 113 °F)
Fluid temperature	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)	-10 °C to 80 °C (14 °F to 176 °F)
Bore size	10 mm (0.39 in)	15 mm (0.59 in)	19 mm (0.75 in)	25 mm (0.98 in)	32 mm (1.26 in)	40 mm (1.57 in)	50 mm (1.97 in)	65 mm (2.56 in)	80 mm (3.15 in)	100 mm (3.94 in)
Wall thickness	10.5 mm (0.413 in)	10.5 mm (0.413 in)	8.5 mm (0.337 in)	14.1 mm (0.555 in)	14.5 mm (0.571 in)	13.2 mm (0.52 in)	15 mm (0.591 in)	17.1 mm (0.673 in)	21 mm (0.827 in)	22 mm (0.866 in)
Length	510 mm (20.1 in)	755 mm (29.7 in)	755 mm (29.7 in)	1005 mm (39.9 in)	1250 mm (49.2 in)	1490 mm (58.7 in)	1820 mm (71.7 in)	2340 mm (91.1 in)	2780 mm (109.4 in)	3280 mm (129.1 in)
Weight	0.4 kg (0.88 lbs)	0.8 kg (1.76 lbs)	0.6 kg (1.32 lbs)	2 kg (4.41 lbs)	3 kg (6.61 lbs)	3.5 kg (7.72 lbs)	6 kg (13.23 lbs)	12 kg (26.46 lbs)	21 kg (46.3 lbs)	30 kg (66.14 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)