CalefactioVerified
HGTE-25
Thermal Expansion Tank
Product Overview
Ensure optimal system pressure in your domestic potable hot water installations with the Calefactio HGTE-25 fixed bladder expansion tank. This 8-gallon steel tank features a durable EPDM bladder and stainless steel ¾” MNPT connection, designed for permanent separation of water from air and certified to NSF61/ANSI 61 & 372 by CSA. Download the comprehensive spec sheet and shop drawings for your next project's easy submittal process.
Key Features
- 100% Acceptance factor for efficient operation.
- EPDM fixed bladder ensures permanent separation of water from air, protecting the steel tank.
- Factory pre-charged to 50 PSI, with easy on-site adjustment to system operating pressure.
- Durable stainless steel connection.
- Certified to NSF61/ANSI 61 & 372 by CSA for potable water systems.
- Suitable for domestic potable hot water applications.
Technical Specs
ModelHGTE-25
Volume8.0 Gallons (30 Liters)
Weight14 lbs (6 kg)
ManufacturerCalefactio
Tank MaterialSteel Shell with EPDM Bladder
CertificationsNSF61/ANSI 61 & 372 by CSA
Connection Size3/4 inch MNPT
Connection MaterialStainless Steel
Pre-Charge Pressure50 PSI (Factory)
Maximum Operating Pressure150 PSI
Maximum Operating Temperature200ºF
Dimensions (Diameter x Height)13.8 in (350 mm) x 16.4 in (418 mm)
About This Spec
Last Verified
April 3, 2026
Status
Verified (2x confirmed)