PTFE Expansion Joint

Requires flexible, DEF-resistant connections to allow for lateral and vertical tank contraction and expansion, and to reduce vibration stress.
To meet 2010 EPA regulations in North America, most producers of diesel engines have announced plans to use Selective Catalytic Reduction (SCR) technology, requiring Diesel Exhaust Fluid (DEF).
By providing the right kind of storage for this chemical, safety can be maintained – and the integrity of the product can be preserved.
Several of Poly Processing’s features can make your storage system work for handling DEF. An IMFO® system is ideal for ease of cleaning and preventing contamination, since the tank drains at its true bottom. Heat pads and insulation can help keep the chemicals at the optimal temperature, greatly reducing the chance of separation and settling.
Chemical | Resin Type | Specific Gravity Rating | Fitting Material | Gasket Material | Bolt Material |
---|---|---|---|---|---|
DEF | XLPE or HDPE | 1.35, 1.65, 1.9 | PVC | EPDM/Viton® | 316SS |
High-density crosslinked polyethylene (XLPE) for long term durability.
Integrally Molded Flanged Outlet (IMFO®) for easier cleaning and better product utilization.
Heating pads and insulation for maintaining chemical integrity.
SAFE-Tank® if secondary containment is needed.
Requires flexible, DEF-resistant connections to allow for lateral and vertical tank contraction and expansion, and to reduce vibration stress.
Fittings: IMFO® system recommended. The flange is integrally molded at the true bottom of the tank, so full drainage is achieved below tank knuckle radius.
Heat trace and insulation: Tanks can be adapted with heating pads and insulation to protect against temperature variations.
Tank
IMFO® Vertical Flat Bottom of XLPE:
Non-IMFO® alternative:
SAFE-Tank® XLPE:
Standard Vertical Flat Bottom XLPE:
Horizontal Tanks:
Plumbing to the tank
◦Axial Compression ≥ .67˝
◦Axial Extension ≥ 0.67˝
◦Lateral Deflection ≥ 0.51
◦Angular Deflection ≥ 14°
◦Torsional Rotation ≥ 4°
Venting
Foundation and restraints
Temperature
Product should not exceed 100°F at delivery or during storage to maintain ASTM D1998 design parameters. Contact Customer Support if chemical is to exceed 100°F.
Lid
Bolted manway cover
Options
Restraint systems for wind and seismic, level gauges, ladders, heating pads, insulation, fume-tight manway and engineering stamp