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Additive Injection

About Additive Injection

Additive injection is a small stream into a larger one: odorant, inhibitor, dye, or a process additive. Over 8,100 items, mostly diaphragm pumps plus Walchem injection. True solenoid metering lives on Chemical Dosing; use this page when the job is diaphragm transfer into a line.

What additive feed buys here

Injection: Walchem EWP chemical injection pumps.
Compact AODD: Wilden Velocity compact pumps (distinctive vs the full Pro-Flo catalog that also sits here).
Plastic AODD transfer: All-Flo non-metallic diaphragm pumps.

Solenoid and motor-driven metering (LMI, Pulsatron, Grundfos DDA): Chemical Dosing & Metering. Stenner peristaltic: Injection / Dosing. Request a quote with the additive, the dose rate, and the line pressure.

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8,182 products

Walchem

EWP-270ETC08N-UHL

Walchem EWP-270ETC08N-UHL EWP-L Series Chemical Metering Pumps with Manual Speed Control & No Options. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. TC Liquid End including PVDF Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D2-TC, Spare Parts Kit N31TC-PK Available.

$1,077.00

Walchem

EWP-270ETC08N-UHR

Walchem EWP-270ETC08N-UHR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. TC Liquid End including PVDF Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31TC2R, Spare Parts Kit N31TC-PK Available.

$1,413.00

Walchem

EWP-270ETC08N-USL

Walchem EWP-270ETC08N-USL EWP-L Series Chemical Metering Pumps with Manual Speed Control & No Options. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. TC Liquid End including PVDF Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D1-TC, Spare Parts Kit N31TC-PK Available.

$1,077.00

Walchem

EWP-270ETC08N-USR

Walchem EWP-270ETC08N-USR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. TC Liquid End including PVDF Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31TCUR, Spare Parts Kit N31TC-PK Available.

$1,413.00

Walchem

EWP-270EVC08M-UHL

Walchem EWP-270EVC08M-UHL EWP-L Series Chemical Metering Pumps with Manual Speed Control & Multi-Function Valve. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D1-VCM, Spare Parts Kit N31VC-PK Available.

$1,030.00

Walchem

EWP-270EVC08M-UHR

Walchem EWP-270EVC08M-UHR EWP-R Series Chemical Metering Pumps with Digital Speed Control & Multi-Function Valve. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VC2RM, Spare Parts Kit N31VC-PK Available.

$1,349.00

Walchem

EWP-270EVC08M-USL

Walchem EWP-270EVC08M-USL EWP-L Series Chemical Metering Pumps with Manual Speed Control & Multi-Function Valve. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D1-VCM, Spare Parts Kit N31VC-PK Available.

$1,030.00

Walchem

EWP-270EVC08M-USR

Walchem EWP-270EVC08M-USR EWP-R Series Chemical Metering Pumps with Digital Speed Control & Multi-Function Valve. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VCURM, Spare Parts Kit N31VC-PK Available.

$1,349.00

Walchem

EWP-270EVC08N-UHL

Walchem EWP-270EVC08N-UHL EWP-L Series Chemical Metering Pumps with Manual Speed Control & No Options. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D2-VC, Spare Parts Kit N31VC-PK Available.

$861.00

Walchem

EWP-270EVC08N-UHR

Walchem EWP-270EVC08N-UHR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VC2R, Spare Parts Kit N31VC-PK Available.

$1,180.00

Walchem

EWP-270EVC08N-USL

Walchem EWP-270EVC08N-USL EWP-L Series Chemical Metering Pumps with Manual Speed Control & No Options. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D1-VC, Spare Parts Kit N31VC-PK Available.

$861.00

Walchem

EWP-270EVC08N-USR

Walchem EWP-270EVC08N-USR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VC Liquid End including PVC Head, Alumina Ceramic Valve Balls, FKM Seat, FKM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VCUR, Spare Parts Kit N31VC-PK Available.

$1,180.00

Walchem

EWP-270EVE08M-UHL

Walchem EWP-270EVE08M-UHL EWP-L Series Chemical Metering Pumps with Manual Speed Control & Multi-Function Valve. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D1-VEM, Spare Parts Kit N31VE-PK Available.

$1,030.00

Walchem

EWP-270EVE08M-UHR

Walchem EWP-270EVE08M-UHR EWP-R Series Chemical Metering Pumps with Digital Speed Control & Multi-Function Valve. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VE2RM, Spare Parts Kit N31VE-PK Available.

$1,349.00

Walchem

EWP-270EVE08M-USL

Walchem EWP-270EVE08M-USL EWP-L Series Chemical Metering Pumps with Manual Speed Control & Multi-Function Valve. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D1-VEM, Spare Parts Kit N31VE-PK Available.

$1,030.00

Walchem

EWP-270EVE08M-USR

Walchem EWP-270EVE08M-USR EWP-R Series Chemical Metering Pumps with Digital Speed Control & Multi-Function Valve. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VEURM, Spare Parts Kit N31VE-PK Available.

$1,349.00

Walchem

EWP-270EVE08N-UHL

Walchem EWP-270EVE08N-UHL EWP-L Series Chemical Metering Pumps with Manual Speed Control & No Options. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D2-VE, Spare Parts Kit N31VE-PK Available.

$861.00

Walchem

EWP-270EVE08N-UHR

Walchem EWP-270EVE08N-UHR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VE2R, Spare Parts Kit N31VE-PK Available.

$1,180.00

Walchem

EWP-270EVE08N-USL

Walchem EWP-270EVE08N-USL EWP-L Series Chemical Metering Pumps with Manual Speed Control & No Options. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EZC31D1-VE, Spare Parts Kit N31VE-PK Available.

$861.00

Walchem

EWP-270EVE08N-USR

Walchem EWP-270EVE08N-USR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VE Liquid End including PVC Head, Alumina Ceramic Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VEUR, Spare Parts Kit N31VE-PK Available.

$1,180.00

Walchem

EWP-270EVF08M-UHR

Walchem EWP-270EVF08M-UHR EWP-R Series Chemical Metering Pumps with Digital Speed Control & Multi-Function Valve. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VF Liquid End including PVC Head, PTFE Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VF2RM, Spare Parts Kit N31VF-PK Available.

$1,349.00

Walchem

EWP-270EVF08M-USR

Walchem EWP-270EVF08M-USR EWP-R Series Chemical Metering Pumps with Digital Speed Control & Multi-Function Valve. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VF Liquid End including PVC Head, PTFE Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VFURM, Spare Parts Kit N31VF-PK Available.

$1,349.00

Walchem

EWP-270EVF08N-UHR

Walchem EWP-270EVF08N-UHR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 230 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VF Liquid End including PVC Head, PTFE Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VF2R, Spare Parts Kit N31VF-PK Available.

$1,180.00

Walchem

EWP-270EVF08N-USR

Walchem EWP-270EVF08N-USR EWP-R Series Chemical Metering Pumps with Digital Speed Control & No Options. 115 Volt, 50/60 Hz, 3/8" NPT or 1/2" Tubing Suction & Discharge. VF Liquid End including PVC Head, PTFE Valve Balls, EPDM Seat, EPDM Seals, PCTFE (bonded to EPDM) Diaphragm. 4.3 GPH (270 mL/min), 50 psi (0.35 mPa) Max Pressure. Replacement for Obsolete Model EWN-C31VFUR, Spare Parts Kit N31VF-PK Available.

$1,180.00

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What additive feed buys here

Injection: Walchem EWP chemical injection pumps.
Compact AODD: Wilden Velocity compact pumps (distinctive vs the full Pro-Flo catalog that also sits here).
Plastic AODD transfer: All-Flo non-metallic diaphragm pumps.

Additive Injection

About Additive Injection

What additive feed buys here

Related Products and Parts

Popular Series

Additive Injection

About Additive Injection

What additive feed buys here

Related Products and Parts

Popular Series

Additive Injection

About Additive Injection

What additive feed buys here

Related Products and Parts

Popular Series

Find all the technical information in our Resource Center

Additive Injection

About Additive Injection

What additive feed buys here

Related Products and Parts

Popular Series

Find all the technical information in our Resource Center