Taco 138D Series 100 Stainless Steel Pump 1HP 115v

Move large potable-water volumes with Taco 138D Series 100, a 1 HP stainless-steel three-piece in-line circulator listed for 115 V single-phase service. Its 145 GPM maximum flow, 48 feet maximum head, and multiple flange options suit large-scale hot-water return systems. The supplied data identifies an 8-1/2-inch flange-to-flange length and 42-pound dry weight, giving installers useful clearance and handling references.

The 1725 RPM ODP motor uses oil-lubricated Babbitt-lined sleeve bearings, a non-metallic polymer impeller, hardened alloy-steel shaft, and two-piece carbon/ceramic seal. The pump carries a 125 psi pressure rating and 40°F to 240°F fluid range. Manufacturer reference data for model 138 may identify a different flange arrangement than the supplied listing, so confirm the exact connection configuration before installation.

Key Features & Benefits

- 1 HP Motor: Supports large-scale potable-water return and commercial hot-water circulation.
- 115 V Single-Phase: Fits compatible US service panels without requiring three-phase power.
- 145 GPM Maximum Flow: Handles substantial domestic-water circulation within the stated performance range.
- 48 Feet Maximum Head: Provides a clear reference for higher-resistance return systems.
- Stainless-Steel Body: Provides the specified casing material for potable-water service.
- 125 psi Maximum Pressure: Establishes the listed pressure limit for compatible systems.
- 8-1/2-Inch Flange-to-Flange: Helps installers plan pipe alignment and replacement clearance.
- 42-Pound Dry Weight: Gives technicians a practical handling reference before installation.
- Connection Verification: Helps prevent a flange mismatch between the listing and current manufacturer data.

Why Choose Taco 138D Series 100

The Taco 138D offers high flow, stainless-steel construction, and detailed electrical and dimensional references for large potable-water return systems.

- Build: Stainless steel, polymer impeller, hardened alloy-steel shaft, sleeve bearings, and carbon/ceramic seal define the supplied assembly.
- Value: The listed flow, head, pressure, dimensions, and dry weight help contractors plan replacement work.
- Audience: Suited to plumbing contractors, hotel engineers, apartment maintenance teams, and commercial DHW specialists.

Applications & Use Cases

Use Taco 138D for large-scale potable-water return, industrial hot-water systems, and compatible open-loop circulation. The supplied data identifies an 8-1/2-inch flange-to-flange length, 42-pound dry weight, 145 GPM maximum flow, and 48 feet maximum head. Confirm the exact flange size, valve clearance, pipe support, and installation orientation before ordering.

Warranty & Support

- Warranty Terms Require Confirmation: Verify duration, coverage, registration, exclusions, and authorized service requirements with Taco or the seller.
- Match model 138D, 1 HP motor, 115 V supply, 13.4 amp rating, flange arrangement, and potable-water certifications before ordering.

Flush the line, purge trapped air, verify the 115 V supply, and inspect the sleeve-bearing and seal areas before startup. Check flow, head, pressure, temperature, vibration, and leakage during commissioning. Purchase the Taco 138D Series 100 stainless-steel potable-water circulator through Mulmotor.com for authentic equipment, applicable warranty support, and pump assistance.