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Therm-X-Trol®
Thermal Expansion Tanks

Therm-X-Trol expansion tanks are designed to control pressure in commercial closed, potable hot water systems. Available in diaphragm, partial acceptance bladder and full acceptance bladder designs, these tanks range in size from 2 gallons (7.6 liters) to 528 gallons (2,000 liters). Offered with maximum working pressure up to 300 PSIG (21 bar), Therm-X-Trol is effective at protecting the water heater and other plumbing fixtures while saving energy and money. Available in ASME and Non-ASME models.

  • FEATURES
  • SPECIFICATIONS
  • BROCHURES
  • MANUAL & SUBMITTALS

FEATURES

Diaphragm Design – Deep Drawn Construction:

  • Increased Strength; Reduced Diameter and Reduced Weight.
  • Antimicrobial Liner Neutralizes Bacteria on Contact.
  • Tested to JIS Z 2801 for Reduction of Legionella, Staphylococcus and E. coli.
  • Follows ASHRAE 188 Anti-Legionella Guidelines.
  • Patented Turbulator® Prevents Sediment Buildup.
  • Max. Operating Temperature: 200º F.

Diaphragm Design – Head & Shell Construction:

  • Antimicrobial Liner Neutralizes Bacteria on Contact.
  • Tested to JIS Z 2801 for Reduction of Legionella, Staphylococcus and E. coli.
  • Follows ASHRAE 188 Anti-Legionella Guidelines.
  • Max. Operating Temperature: 200º F.

Full Acceptance Bladder Design:

  • Butyl Bladder: Industry’s Thickest
  • Replaceable Bladder Avoids Costly Tank Replacement.
  • Max. Operating Temperature: 240º F.

Partial Acceptance Bladder Design:

  • Butyl Bladder: Industry’s Thickest
  • Replaceable Bladder Avoids Costly Tank Replacement.
  • Max. Operating Temperature: 240º F.

SPECIFICATIONS

Construction

  • Shell: ASME Approved Steel
  • Diaphragm/Bladder: Heavy Duty Butyl Compound
  • Liner – Diaphragm Models Only: Antimicrobial JIS Z 2801 Tested for Reduction of Legionella, Staphylocuccus and E.coli
  • System Connection: Stainless Steel
  • Finish: Red Oxide Primer
  • Air Valve: Schrader Valve w/ EPDM Seats
  • Factory Precharge: 55 PSIG (3.8 bar)

Performance

  • Max. Operating Temperature: 200º F (93º C)
  • Max. Working Pressure: Available 125 PSIG (8.3 bar) through 300 PSIG (21 bar)
  • Warranty: 3-Year Limited

Application

  • For use in closed, potable hot water systems to control pressure buildup.
  • Meets all ASME Section VIII, Division 1 code standards.
  • Available with optional sight glass.
  • Stand models available with optional seismic restraints.

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