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

Move large domestic-water volumes with Taco 138N Series 100, a 1 HP stainless-steel three-piece in-line circulator using 115 V single-phase power. Its 145 GPM maximum flow and 48 feet of maximum head suit large-scale potable-water return systems, while the universal two-bolt flange accepts several listed connection sizes. Confirm the actual flange kit, system curve, and pipe layout before installation.

The 1725 RPM ODP motor uses an oil-lubricated drive arrangement with Babbitt-lined sleeve bearings, hardened alloy-steel shaft, non-metallic polymer impeller, and two-piece carbon/ceramic seal. The pump is rated for 125 psi and 40°F to 240°F fluid, with an 8-1/2-inch flange-to-flange length and 42-pound dry weight. Verify the 13.4 amp full-load current and operating conditions before startup.

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 applications.
- Universal Two-Bolt Flange: Allows connection-size matching across the listed 3/4-inch to 1-1/2-inch range.
- 125 psi Maximum Pressure: Establishes the stated pressure limit for compatible systems.
- 8-1/2-Inch Flange-to-Flange: Helps installers plan replacement piping and clearance.
- 42-Pound Dry Weight: Gives technicians a practical handling reference before installation.

Why Choose Taco 138N Series 100

The Taco 138N combines high flow, stainless-steel construction, and universal flange flexibility for large potable-water return systems where detailed replacement measurements matter.

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

Applications & Use Cases

Use Taco 138N for large-scale potable-water return, industrial hot-water systems, and compatible 3/4-inch to 1-1/2-inch two-bolt flange layouts. The pump has an 8-1/2-inch flange-to-flange length and 42-pound dry weight, with 145 GPM maximum flow and 48 feet maximum head. Confirm valve clearance and support before installation.

Warranty & Support

- Warranty Terms Require Confirmation: Verify duration, coverage, registration, exclusions, and authorized service requirements with Taco or the seller.
- Match model 138N, 1 HP motor, 115 V supply, 13.4 amp rating, flange kit, 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 138N Series 100 stainless-steel potable-water circulator through Mulmotor.com for authentic equipment, applicable warranty support, and pump assistance.