3,000-Gal Pressure Tank — Certified for 50 PSI / 24 Hours
The 3,000-gallon extrusion-wound pressure vessel demonstrates ASME-like reliability, proven through a sustained 50 PSI hydrotest over 24 hours — verifying structural integrity, weld precision, and creep-resistance through Houston PolyTank's proprietary extrusion-winding.
30+ years spec experience. Send James the process data and get a real answer — not a catalog page.
Request a Spec Review →Made from high-performance PP, this tank withstands aggressive media up to 180°F (200°F for water), safely containing:
Engineered Under DVS 2205
Each vessel is engineered under DVS 2205 and welded by Certified Thermoplastic Welders. Every unit receives a full QC package — hydrostatic test logs, dimensional verification, material certifications, and welder IDs. The extrusion-wound shell eliminates stress points and prevents "elephant-foot" deformation.
Connections
Welded ANSI 150-lb flanges (300-lb optional) with stainless or poly-coated backing rings.
Access & Handling
Top manway, lifting lugs & flanged nozzles for service and maintenance access.
Integration
Supports direct mixer mounts and custom hardware without external frames.
Maintain Warranty Coverage — Follow HPT Protocols
- Use expansion joints on hard lines — plastic expands 19x more than metal.
- Support heavy equipment with spring supports — never hang off fittings.
- Video verification of offload / lift / set required for warranty validation.
Frequently Asked Questions
What does the 50 PSI / 24-hour hydrostatic test actually verify?
A sustained 50 PSI hydrotest held for 24 hours verifies structural integrity, weld precision, and creep-resistance in the extrusion-wound polypropylene wall — a much more demanding proof than a short-duration pressure spike test, since polypropylene's creep behavior only shows up under sustained load over time.
Why does DVS 2205 matter for a polypropylene pressure tank?
DVS 2205 is the German welding/design standard this tank is built to — it governs the extrusion-winding and thermoplastic welding process. A tank built without certified welders working to this standard doesn't carry the same structural assurance, regardless of wall thickness alone.
Why do plastic pressure tanks need expansion joints on hard-piped connections?
Polypropylene expands roughly 19x more than metal piping under temperature change. A hard line without an expansion joint transmits that differential expansion directly into the tank nozzle/flange connection, which is a real, documented stress-failure point — not a theoretical concern.
Is this tank rated for 98% sulfuric acid at full concentration?
Yes, per Houston PolyTank's chemical compatibility data for this construction — 98% sulfuric acid, hydrochloric acid, and sodium hypochlorite are all listed compatible chemicals for this tank. As with any chemical storage vessel, actual service conditions (temperature, exposure duration) should be confirmed against the vendor's documentation for the specific application.
Need a pressure vessel spec'd for your exact chemistry?
Send LibertyCES your fluid, concentration, temperature, and pressure requirements — we'll help confirm the right Houston PolyTank configuration.
Ready to buy or need a fast answer? Call, text, or email James directly — (559) 395-5500 · [email protected].