Watts Water Technologies
PLT-5, 2.1 Gallon Potable Water Expansion Tank
- SKU:
- 0067370
- Availability:
- Usually Ships Same Day
- Weight:
- 5.50 LBS
Description

PLT-5, 2.1 Gallon Potable Water Expansion Tank
This potable water expansion tank is used on gas, oil, or electric, direct-fired, residential water heater and hot water storage tank applications to absorb the increased volume of water created by thermal expansion. It also maintains balanced pressure throughout the water supply system by keeping system pressure below the T&P relief valve setting. This field-adjustable steel tank is air pre-charged at 20 psi, volume 2.1 gallons, designed with an FDA-approved polypropylene liner and Butyl rubber diaphragm, copper-lined steel, and 3/4 inch male inlet connection. An expansion membrane prevents air-to-water contact in the tank ensuring a long system life. IAPMO listed and ANSI/NSF 61 certified. The maximum pressure is 150 psi (10 bar).

Product Highlights
- Lead Free
- Prevents over-pressure caused by thermal expansion
- Air pre-charge at 20 psi
- 3/4 IN male connection
- Butyl rubber diaphragm
Technical Specifications
| Manufacturer | Watts Water Technologies |
|---|---|
| Series / Model | PLT-5 |
| Connection / Configuration | 3/4 inch male inlet |
| Construction | Steel tank / butyl diaphragm |
| Tank Volume | 2.1 gallons |
| Air Pre-charge | 20 psi; field adjustable |
| Maximum Pressure | 150 psi |
| Product Code | 0067370 |
Product Documents
Product Questions
What is the listed connection configuration?
3/4 inch male inlet. Confirm the selected option and matching piping requirements before ordering.
What construction is identified for this product?
Steel tank / butyl diaphragm. Review the product documents for the full component materials and selected model details.

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