Expansion Tank Manufacturer — Fixed and Replaceable Diaphragm Tanks

Fixed Expansion Tanks

Diaphragm expansion tanks
Max.Operating Pressure: 10 bar /145 psi
Factory Pre-charge: 1.9 bar /28 psi
Test Pressure: 14.3bar/207psi
Min.Op.Temp.: (avoid freezing) -10°C/14°F
Max.Operating Temp.: 90°C / 194°F
Material of interface: 304 stainless steel
Connection: 1"BSPT

Inline Model Tanks

Inline pressure tank models
Model Number Conection (in) Nominal Volume (L/G) Dimensions (mm) Weight wall thickness (mm)
A B C kg lb
TLI-2LX 1"BSPT 2 / 0.5 208 126 - 1.05 2.32 1.1
TLI-5LX 5 / 1.3 272 202 - 2 4.41
TLI-8LX 8 / 2.1 310 202 - 2.3 5.07
TLI-12LX 12 / 3.2 353 230 - 3 6.61
TLI-18LX 18 / 4.8 374 278 - 3.85 8.49
TLI-24LX 24 / 6.3 440 290 - 4.7 10.36
TLI-35LX 35 / 9.2 480 318 - 5.55 12.24 1.1

Horizontal Model Tanks

Horizontal pressure tank models
Model Number Conection (in) Nominal Volume (L/G) Dimensions (mm) Weight wall thickness (mm)
A B C kg lb
TLI-24LH 1"BSPT 24 / 6.3 447 322 163 5.15 11.35 1.1
TLI-35LH 35 / 9.2 480 352 177 5.95 13.12
TLI-60LH 60 / 15.9 530 422 213 10.9 24.03 1.5
TLI-100LH 100 / 26.4 720 466 237 15.35 33.73

Vertical Model Tanks

Vertical pressure tank models
Model Number Conection (in) Nominal Volume (L/G) Dimensions (mm) Weight wall thickness (mm)
A B C kg lb
TLI-35LV 1"BSPT 35 / 7.95 550 318 63 6.2 13.67 1.1
TLI-60LV 60 / 15.9 623 387 67 11 24.25
TLI-100LV 100 / 26.4 810 428 66 15.5 34.17 1.5

Product details

Product Structure

Product structure diagram
  1. ① O-ring protection no leakage air valve cover
  2. ② Thickened 1.1mm carbon steel tank body 10bar pressure resistance
  3. ③ Fixed butyl rubber diaphragm, no air leakage and maintenance-free
  4. ④ Food grade and corrosion-resistant polypropylene lining
  5. ⑤ Reinforced 304 stainless steel interface
  6. ⑥ Replaceable reinforced engineering thermoplastic brackets and feet
  7. ⑦ Water storage area is isolated from the barrel wall
  8. ⑧ Air storage chamber
  9. ⑨ Durable and high-adhesion spray plastic coating

Product Detail Photos

Product view

Replaced Expansion Tank

Replaceable-diaphragm expansion tank
Max.Operating Pressure: 8 bar / 116 psi, 10 bar / 145 psi
Factory Pre-charge: 1.5 bar, 1.8 bar, 2.5 bar
Min.Op.Temp.: (avoid freezing) -10°C / 14°F
Max.Operating Temp.: 100°C / 212°F
Material of interface: Galvanized Steel
Connection: 1"BSPT

Replaced Expansion Tank Specifications

Replaceable-diaphragm expansion tank dimensions
Model Number Connection (in) Nominal Volume Dimensions (mm) Weight wall thickness (mm)
L G A B C kg lb
TLL-5LR (8bar) 1"BSPT 5 1.3 292 151 - 1.17 2.57 0.8
TLL-8LR (8bar) 8 2.1 325 201 - 1.6 3.52 0.8
TLL-5LR (10bar) 5 1.3 292 152 - 1.5 3.31 1.1
TLL-8LR (10bar) 8 2.1 325 202 - 2.1 4.63 1.1

Specify the application before choosing a tank

Select an expansion tank from the system fluid volume, minimum and maximum temperature, cold fill pressure at the tank connection, relief-valve setting, fluid composition, and required acceptance volume. Also specify vertical, horizontal, or inline installation; connection size and thread standard; replaceable or fixed diaphragm; destination market; and quantity. Published nominal capacity is not the same as acceptance volume, so confirm the model’s acceptance data and pressure-temperature limits before ordering. For preliminary calculations, use the linked sizing guide; for a project review, send the full operating conditions rather than only a requested tank size.

ASME
RoHS
NSF
ISO 9001
CE

Request a Project Quote

Include these application details so our sales team can review the correct tank configuration:

How to Size an Expansion Tank for Hydronic Heating Systems — Manufacturer Guide

Step-by-step engineering guide to expansion tank sizing from an ASME-certified manufacturer. Includes worked examples, ASHRAE formula, and quick-reference table. OEM/ODM factory-direct supplier.