Plunger

JWB series

Plunger metering pump, up to 500 L/h at up to 360 bar

JWB series: plunger metering pumps for accurate, repeatable dosing of chemicals and additives. 32 models from 7 to 500 L/h, with pressure up to 360 bar. Pump-head and diaphragm materials are chosen for your liquid; send us the chemical, concentration and temperature and we will confirm the right head.

Plunger contacts the medium directly; low transmission loss at high pressure
Multi-channel combination seal of graphite fibre + GSJ
Power 380 V three-phase, 220 V single-phase or three-phase, 50/60 Hz; variable-frequency control, on/off motor control or electric stroke controller

View 32 models

Flow: 7–500 L/h
Pressure: up to 360 bar
Models: 32

Sizes

The 32 models of the JWB series range grouped by motor size. Open the Models tab for every model with its performance data.

Motor size	Flow range	Pressure	Motor	Models
550 W motor	8–500 L/h	5–250 bar	550 W	16
750 W motor	7–500 L/h	8–360 bar	750 W	16

Models

Filter by duty point, mains frequency or size. Click a model for its performance curve and data.

Model table (PDF)

Model	Series	Flow L/h	Pressure bar	Strokes/min	Motor W	Plunger mm
JWB500/0.8	JWB	500	8	144	750	70	Details
JWB500/0.5	JWB	500	5	144	550	70	Details
JWB430/0.9	JWB	430	9	144	750	65	Details
JWB430/0.6	JWB	430	6	144	550	65	Details
JWB360/1.0	JWB	360	10	144	750	60	Details
JWB360/0.7	JWB	360	7	144	550	60	Details
JWB320/1.2	JWB	320	12	144	750	56	Details
JWB320/0.8	JWB	320	8	144	550	56	Details
JWB250/1.5	JWB	250	15	144	750	50	Details
JWB250/1.0	JWB	250	10	144	550	50	Details
JWB200/1.8	JWB	200	18	144	750	45	Details
JWB200/1.2	JWB	200	12	144	550	45	Details
JWB160/2.3	JWB	160	23	144	750	40	Details
JWB160/1.6	JWB	160	16	144	550	40	Details
JWB120/3.0	JWB	120	30	144	750	35	Details
JWB120/2.0	JWB	120	20	144	550	35	Details
JWB90/4.1	JWB	90	41	144	750	30	Details
JWB90/2.8	JWB	90	28	144	550	30	Details
JWB60/5.9	JWB	60	59	144	750	25	Details
JWB60/4.0	JWB	60	40	144	550	25	Details
JWB45/7.6	JWB	45	76	144	750	22	Details
JWB45/5.2	JWB	45	52	144	550	22	Details
JWB38/9.2	JWB	38	92	144	750	20	Details
JWB38/6.3	JWB	38	63	144	550	20	Details
JWB30/11.3	JWB	30	113	144	750	18	Details
JWB30/7.8	JWB	30	78	144	550	18	Details
JWB20/16.4	JWB	20	164	144	750	15	Details
JWB20/11.0	JWB	20	110	144	550	15	Details
JWB11/25.0	JWB	11	250	144	750	12	Details
JWB11/17.0	JWB	13	170	144	550	12	Details
JWB7/36.0	JWB	7	360	144	750	10	Details
JWB7/25.0	JWB	8	250	144	550	10	Details

Spare parts for JWB series

Typical wear and service parts for this type of pump. The exact part, material and part number depend on the model, so send us the model code (or a nameplate photo) and we confirm and quote the right one.

Request spare parts quote

Part	What it does
Plunger	Displaces the liquid; wears with abrasive or crystallising liquids
Packing / seals	Seal the plunger; the most common service item
Check valves and seats	Suction and discharge valves that give one-way flow
Pump head	Liquid end in the material suited to the liquid
Oil seals and gearbox oil	Lubricate the crank and worm gear; change at the interval in the manual
Relief valve	Protects the pump and line against over-pressure

Generic list for this pump type; it is not a part-number catalogue for the series. Our team confirms the correct part for your model before quoting.

Specification & options

Key parameters

Max flow rate500 L/h
Max pressure36 MPa (360 bar)
Stroke frequency144 /min
Stroke length16 mm

Fluid end and materials

Fluid end	Pump head	Valve body / seat	Valve ball	Plunger	Tamping
304SS	304SS	304SS	304SS / Zirconia	304 + Ceramic	Graphite fibre + GSJ
316SS	316SS	316SS	304SS / Zirconia	316 + Ceramic	Graphite fibre + GSJ

Technical data

Typical applications

Chemical
petrochemical
electric power and metallurgy
high-pressure duties

Data basis

CNP metering pump selection manual, printed pp. 61–62

Performance values are taken from the published CNP catalogue data. Our engineers confirm the final selection for your liquid, temperature, supply and site before quoting.