Watts DETA-42 1" Expansion Tank, MNPT

The Watts DETA-42 is a 1" expansion tank with a 22 gallon capacity.

This potable water expansion tank is used on gas, oil, electric, indirect-fired, commercial 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 carbon steel tank with field-adjustable air charge is built with ASME Section VIII construction, tank volume 22 gallons, pre-charged to 40 psi, has fixed FDA-approved butyl rubber diaphragm, and 1 inch stainless steel male NPT inlet connection and a 0.302-32 inch charging valve connection (standard tire valve) to facilitate on-site charging of the tank to meet system requirements. An expansion bladder prevents air-to-water contact in the tank ensuring a long system life. The maximum pressure rating is 150 psi (10 bar).

Features

• Heavy duty fixed butyl rubber bladder with bladder monitor system
• Pre-charged to 40 psi
• In line and free standing models
• Can be used with most standard hot water heaters and storage tanks
• Field adjustable

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 40 psi. Match this to system fill pressure or the tank cannot accept expansion.

What size is the tank?

It holds 22 gallons.

What is it designed for?

It is intended for domestic water service.

Specifications

• Size: 1"
• Inlet Size: 1"
• Connection: MNPT
• Connection Gender: Male
• Application: Domestic Water
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: DETA-42
• Certifications: FDA
• Lead-Free: No
• Component Role: Expansion Tank
• Tank Volume (gal): 22
• Pre-Charge Pressure (psi): 40
• Potable Water Rated: Yes