Pulsafeeder GreenLine DM4B PVDF | 41.2 GPH, 145 PSI

Pulsafeeder GreenLine DM4B PVDF Metering Pump

Select the motor/control package and leak detection option for your application. Each selection corresponds to a distinct manufacturer part number and price. The GreenLine DM4B is rated for 41.2 GPH (156 LPH) at up to 145 PSI (10 bar), with a PVDF liquid end and ceramic check balls. It provides mechanically driven diaphragm dosing for industrial chemical-feed applications.

Manufacturer Lead Time

This is a built-to-order pump, typically shipping directly from the factory in approximately two weeks, plus carrier transit time. Checkout shipping estimates do not include the manufacturer build and processing time. Please call or email if you need expedited shipping. Lead times and expedited availability depend on the selected configuration and current factory schedule.

Choose Your Motor / Control Package

• Single-phase - manual adjustment: Includes a 1.00 HP, TEFC, NEMA 56C motor rated 115/230V, single-phase, 60 Hz. The motor runs at fixed speed; adjust pump output using the manual stroke-length control. A VFD is not included.
• Three-phase - VFD ready: Includes a 1.00 HP, TEFC, NEMA 56C motor rated 230/460V, three-phase, 60 Hz. A compatible external variable-frequency drive can provide speed control. The drive is not included.
• VFD included: Includes the three-phase motor and variable-frequency drive package with 10:1 speed control. The manufacturer brochure specifies single-phase input to this drive package; select and wire the supply according to the supplied drive's nameplate and instructions.

Manual stroke-length adjustment is provided on all six configurations. TEFC means totally enclosed, fan cooled; NEMA 56C identifies the motor mounting frame.

Choose Leak Detection

No leak detection is the standard single-diaphragm configuration. With leak detection adds a double-diaphragm assembly, pressure gauge, and switch for monitoring diaphragm integrity. The switch is rated for 24 VDC, 0.5 amp maximum. Alarm or shutdown operation requires appropriate external wiring and controls.

Available Part Numbers and Prices

Common Pump Specifications

• Manufacturer / series: Pulsafeeder GreenLine
• Hydraulic model: DM4B
• Maximum flow: 41.2 GPH / 156 LPH
• Maximum pressure: 145 PSI / 10 bar
• Stroke rate: 116 SPM at rated 60 Hz operation
• Connections: 1-inch FNPT suction and discharge
• Head, valve guides, valve seats and valve caps: PVDF
• Check balls: Ceramic
• O-rings: PTFE; FKM valve-seat O-rings
• Diaphragm: PTFE-faced composite
• Stroke adjustment: Manual, 0–100% with 1% resolution and auto-locking adjustment
• Motor: 1.00 HP, TEFC, NEMA 56C; electrical configuration depends on selection

Equipment Supplied

Includes the assembled DM4B PVDF pump and the motor selected above. The VFD is supplied only with the VFD-included selection. The double-diaphragm leak detection assembly, gauge, and switch are supplied only with the leak-detection selection. Product image is representative of the series; appearance varies with the selected equipment.

For 316 stainless steel liquid-end options and pricing, please call or email Water Treatment Resource. We can also assist with chemical compatibility, motor power, control requirements, and installation accessory selection.

Manufacturer Literature

Download the GreenLine technical data sheet
Download the GreenLine brochure and configuration guide