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

Please consult your Bredel representative for lower or higher temperature operation. Allowable ambient temperature is based on pump capabilities and may be further limited by gearbox ambient capabilities.