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Small bronze hydronic circulating pump with flange connections and integrated motor

Taco Inc

Taco Inc VM1816-HY2-4C2A00 Hydronic Circulating Pump 1/25 hp 120v

SKU CH-606B-RE51F

Hydronic circulating pump with variable speed, 1/25 hp, 115V AC, 18 ft max head, 15 gpm max flow

  • Energy-efficient design reduces power consumption
  • Variable-speed operation matches system demand precisely
  • Delivers up to 18 ft maximum head pressure
  • Flange connections fit 3/4 in to 1-1/2 in pipes
  • Single-phase 115V AC motor runs on standard household power

Hydronic circulating pump for residential heating

The Taco VM1816-HY2-4C2A00 is a 1/25 hp hydronic circulating pump designed for closed-loop heating systems. It operates on 115V AC single-phase power and offers variable-speed control. The unit is intended for installers and homeowners adding or replacing a circulator in a hydronic loop.

Steady flow across a range of head pressures

At 1 foot of head the pump delivers up to 15 gpm, at 10 feet it provides 8 gpm, and at 15 feet it maintains 5 gpm. The maximum rated head is 18 feet. Variable-speed operation lets the circulator match output to the system curve without short-cycling.

Flanged connections and potable-water limitation

The pump accepts intake pipe sizes from 3/4 in to 1 1/2 in and has a face-to-face dimension of 6 3/8 in. Flanges or unions are not included. The product is not rated for potable-water systems and carries California Proposition 65 warnings for cancer and reproductive harm.

Highlights

  • Energy-efficient design reduces power consumption
  • Variable-speed operation matches system demand precisely
  • Delivers up to 18 ft maximum head pressure
  • Flange connections fit 3/4 in to 1-1/2 in pipes
  • Single-phase 115V AC motor runs on standard household power

Specifications

BrandTACO

Questions about this item

How much power does the 1/25 hp motor draw when the pump runs continuously?

The nameplate voltage is 115V AC single-phase; the motor is rated at 1/25 hp and operates at variable speed to match system demand.

What pipe fittings must I already have to install the flange connection?

The pump accepts 3/4 in, 1 in, 1 1/4 in or 1 1/2 in intake pipe sizes with a 6 3/8 in face-to-face flange dimension; flanges are not included.

Will the 18 ft maximum head work with my existing radiators sized for lower-head pumps?

At 1 ft of head the pump delivers up to 15 gpm, at 10 ft it provides 8 gpm and at 15 ft it provides 5 gpm, so flow decreases as head rises.

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