Watts PLT-12 3/4" Expansion Tank

The Watts PLT-12 is a 3/4" expansion tank with a 4.5 gallon capacity. It is rated to 150 psi.

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 4.5 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).

Features

• Prevents over-pressure caused by thermal expansion
• Air pre-charge at 20 psi
• 3/4" male connection
• Butyl rubber diaphragm

Common Questions

Is it rated for potable water?

Yes, it is rated for potable water systems.

What is the factory pre-charge?

It ships pre-charged to 20 psi. Match this to system fill pressure or the tank cannot accept expansion.

What size is the tank?

It holds 4.5 gallons.

What is it designed for?

It is intended for domestic water service.

Specifications

• Size: 3/4"
• Inlet Size: 3/4"
• Max Pressure (psi): 150
• Application: Domestic Water
• Country of Origin: Taiwan
• Warranty: 1 Year Limited
• MPN: PLT-12
• Certifications: NSF-61, IAPMO
• Lead-Free: No
• Component Role: Expansion Tank
• Tank Volume (gal): 4.5
• Pre-Charge Pressure (psi): 20
• Potable Water Rated: Yes