Pump Selection Guide

A helpful tool to choose the appropriate pump according to its resistance to different chemicals, control features, outputs and pressures.

STEP #1

a) Scroll to Diaphragm, Peristaltic, or Piston pump table to meet your application requirements.
b) From this table note a PRELIMINARY MODEL SERIES selection based on Max Output, Max Pressure, and Control needs. These are SERIES MAXIMUMS; smaller outputs and pressures can be selected in STEP #3.

STEP #2

Once the appropriate PRELIMINARY MODEL SERIES has been determined above, select the appropriate liquid end code from the lower tables for the chosen make (Walchem, Stenner, A&F). Note: check the Chemical Resistance Chart for liquid end material acceptability.

STEP #3

a) You should now have the appropriate PRELIMINARY MODEL SERIES with LIQUID END CODE for your application.
b) To complete the FULL MODEL CODE, click on the PRELIMINARY MODEL link you have chosen. This link will direct you to the pump web page, select your options to finalize your FULL MODEL CODE with the defined maximum output and pressure. Note: there are pump brochures, manuals, dimensions and specifications downloads.

DIAPHRAM PUMPS		MAX SERIES OUTPUT		MAX SERIES PRESURE	CONTROL				CHEMICAL RESISTANCE
MAKE	PRELIMINARY MODEL SERIES SELECTION	GPH	ml/min	PSI	MANUAL ON/OFF	DIGITAL INPUT/OUTPUT	ANALOG INPUT	STOP/PRESTOP INPUT	LIQUID END	DRIVE
Walchem	EWN-B**R	3.2	200	290	YES	YES	YES	YES	See chart below	SOLENOID
Walchem	EWN-C**R	6.7	420	250	YES	YES	YES	YES	See chart below	SOLENOID
Walchem	EWN-B**Y	3.2	200	290	YES	MORE	YES	YES	See chart below	SOLENOID
Walchem	EWN-C**Y	6.7	420	250	YES	MORE	YES	YES	See chart below	SOLENOID

Walchem	EZB*D-**	3.2	200	150	YES	NO	NO	NO	See chart below	SOLENOID
Walchem	EZC*D-**	6.3	400	150	YES	NO	NO	NO	See chart below	SOLENOID

Walchem	EHE*E-**	20	1250	150	YES	YES	YES	YES	See chart below	SOLENOID

Walchem	EWN-C31P*RV-HV	2.3	150	73	YES	YES	YES	YES	See chart below	SOLENOID
Walchem	*EHE36E-HV**	4.0	252	73	YES	YES	YES	YES	See chart below	SOLENOID
Walchem	*EHE46E-HV**	8.0	505	60	YES	YES	YES	YES	See chart below	SOLENOID

A&F	V-6	2.0	126	100	YES	NO	NO	NO	See chart below	MOTOR

Walchem	LKNA-	114.3	7212	225	YES	NO	NO	NO	See chart below	MOTOR
Walchem	LKNB-	114.3	7212	225	YES	NO	NO	NO	See chart below	MOTOR
Walchem	LKNC-	114.3	7212	225	YES	NO	NO	NO	See chart below	MOTOR
Walchem	LKND-	114.3	7212	225	YES	NO	YES	NO	See chart below	MOTOR
Walchem	LKNE-	114.3	7212	225	YES	NO	YES	NO	See chart below	MOTOR
Walchem	LKNF-	114.3	7212	225	YES	NO	NO	NO	See chart below	MOTOR
Walchem	LKNG-	114.3	7212	225	YES	NO	NO	NO	See chart below	MOTOR
Walchem	LKNN-	114.3	7212	225	YES	NO	NO	NO	See chart below	N/A

PERISTALTIC PUMPS		MAX SERIES OUTPUT			MAX SERIES PRESURE	CONTROL		CHEMICAL RESISTANCE
MAKE	PRELIMINARY MODEL SERIES SELECTION	GPH	ml/min	GPD	PSI	TYPE	MANUAL ON/OFF	LIQUID END	DRIVE
Stenner	45MF * * * * *	2.08	131.25	50	100	FIXED	YES	See chart below	MOTOR
Stenner	45MJ * * * * *	2.08	131.25	50	100	ADJUSTABLE	YES	See chart below	MOTOR
Stenner	85MF * * * * *	3.54	223.37	85	100	FIXED	YES	See chart below	MOTOR
Stenner	85MJ * * * * *	3.54	223.37	85	100	ADJUSTABLE	YES	See chart below	MOTOR
Stenner	100F * * * * *	4.17	263.13	100	100	FIXED	YES	See chart below	MOTOR
Stenner	100J * * * * *	4.17	263.13	100	100	ADJUSTABLE	YES	See chart below	MOTOR
Stenner	170F * * * * *	7.08	446.75	170	100	FIXED	YES	See chart below	MOTOR
Stenner	170J * * * * *	7.08	446.75	170	100	ADJUSTABLE	YES	See chart below	MOTOR
Stenner	SVP1 * * * * *	3.54	223.37	85	100	VARIABLE	YES	See chart below	MOTOR
Stenner	SVP4 * * * * *	3.54	223.37	85	100	VARIABLE	YES	See chart below	MOTOR

PISTON PUMPS		MAX SERIES OUTPUT			MAX SERIES PRESURE	CONTROL		CHEMICAL RESISTANCE
MAKE	PRELIMINARY MODEL SERIES SELECTION	GPH	ml/min	GPD	PSI	ANALOG	MANUAL	LIQUID END	DRIVE
A&F	V-7	2.0	120	48	100	NO	YES	See chart below	MOTOR
A&F	V-10-1	60	3600	1440	1000	YES	YES	See chart below	MOTOR
A&F	V-10-2	120	7200	2880	1000	YES	YES	See chart below	MOTOR
A&F	V-10-3	42	2700	1008	1000	YES	YES	See chart below	MOTOR
A&F	V-10-4	56	3600	1344	1000	YES	YES	See chart below	MOTOR

USE THE FOLLOWING THREE MAKE CHARTS (Walchem, Stenner, A&F) TO DETERMINE THE SUITABLE LIQUID END CODE GIVEN MATERIALS ON CHEMICAL RESISTANCE CHART.

WALCHEM: LIQUID END CODE (see Chemical Resistance Chart for Materials)

WALCHEM							Connections
Liquid End Code	Pump Head & Fittings	Diaphragm	Valve Balls	Valve Seat	Valve Seals	Gasket	E-Class	LK
PC(H)	GFRPP	PTFE BONDED TO EPDM	CE	FKM	FKM	PTFE	PE Tubing	n/a
PE(H)	GFRPP		CE	EPDM	EPDM			n/a
VC	PVC		CE	FKM	FKM			NPTM
VE	PVC		CE	EPDM	EPDM			n/a
VF	PVC		PTFE	EPDM	EPDM			n/a
VM	M PVC		CE	FKM	FKM			n/a
FC	PVDF		CE	PCTFE	PTFE			n/a
TC	PVDF		CE	FKM	FKM			NPTM
HV	PVC		CE	PCTFE	FKM		NPTM	n/a
SH	SS		HC	SS	PTFE		1/4" NPTF	n/a
VS	PVC		HC/SS	304SS	EPDM		n/a	NPTM
VH	PVC		HC	PVC	EPDM		n/a	NPTM
S6	316SS		HC	316SS			n/a	NPTM

STENNER: LIQUID END CODE (see Chemical Resistance Chart for Materials)

STENNER
Liquid End Code	Pump Tube	Connector	Suction/Discharge Tubing
S	Santoprene	PVC	PE
T	Tygothane/Versilon	PVC	PE

A&F: LIQUID END CODE (see Chemical Resistance Chart for Materials)

A&F
Liquid End Code	Head / Check Valve/ Piston	Packing Set	Diaphragm***
Blank	Carbon Steel	Buna N*	PTFE**
SS	303SS	PTFE*	PTFE**
S6	316SS	PTFE*	PTFE**
C20	Alloy 20	PTFE*	PTFE**
HC	Alloy 276	PTFE*	PTFE**
* Viton / PTFE / Buna N may be specified at the time of order.
** Viton or Neoprene may be specified at time of order.
*** Applies to V-6 pumps only.

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Pump Selection Guide

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