Hose pump elements

NR Metering hose

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Overview

Natural rubber (NR) Metering hose elements

Manufactured for high consistency and repeatability. Suitable for fluid metering and heavy duty applications. Outstanding abrasion resistance from extruded inner layer. Machined surface finish to dimension. Maximised pumphead life by low stress on bearings.

Examples of compatible media:

Slurries and sludges with up to 80 % solids
Magnesium oxide and titanium dioxide
Water-based paints and pigments

Chemical Compatibility Guide

Features and benefits

Manufactured for high consistency and repeatability
Consistent capacity over the full hose life, independent of varying suction and discharge conditions
Outstanding abrasion resistance from extruded inner layer
Precision machined to ensure critical tolerances are maintained
Pressure capability up to 16 bar (232 psi)
Suction capability up to 9.5 mWC (374 inWC)
Max. fluid temperature: 80 °C (176 °F), Min. fluid temperature: -20 °C (-4 °F)

Technical summary

Max. operating pressure	16 bar
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

	NR Metering hose 10	NR Metering hose 15	NR Metering hose 20	NR Metering hose 25	NR Metering hose 32	NR Metering hose 40	NR Metering hose 50	NR Metering hose 65	NR Metering hose 80	NR Metering hose 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. suction capability	9.5 mWC	9.5 mWC	9.5 mWC	9.5 mWC	9.5 mWC	9.5 mWC	9.5 mWC	9.5 mWC	9 mWC	7 mWC
Max. suction capability	374 inWC	374 inWC	374 inWC	374 inWC	374 inWC	374 inWC	374 inWC	374 inWC	354 inWC	276 inWC
Suction capability (80% Flow rate)	9.5 mWC	9.5 mWC	9.5 mWC	9.5 mWC	9 mWC	9 mWC	8 mWC	8 mWC	7 mWC	5 mWC
Suction capability (80% Flow rate)	374 inWC	374 inWC	374 inWC	374 inWC	354 inWC	354 inWC	315 inWC	315 inWC	276 inWC	197 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	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C	-20 °C to 80 °C
Fluid temperature range	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F	-4 °F to 176 °F
Bore size	10 mm	15 mm	20 mm	25 mm	32 mm	40 mm	50 mm	65 mm	80 mm	100 mm
Bore size	0.39 in	0.59 in	0.79 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	0.51 m	0.75 m	0.75 m	1.01 m	1.25 m	1.49 m	1.82 m	2.31 m	2.78 m	3.28 m
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

Your local Bredel sales office/distributor can advise the right hose for your application. For best pump performance use Bredel Genuine Hose Lubricant

Hose composition

	Hose composition
1	Rough hose surface prior to machining
2	Precision machined NR outer layer
3	Four nylon cord reinforcement layers
4	Inner layer available in NR