Vertical Stainless Steel Pressure Vessel Tank with Level Gauge & Insulation

We build vertical flat-bottom pressure vessels for industrial liquid storage where headroom is tight and process conditions demand more than a simple atmospheric tank. This design combines a welded stainless shell, double-wall insulation, and a level gauge into a single unit, ready for temperature-sensitive media.

The flat bottom sits directly on a level foundation, eliminating leg structures and lowering the center of gravity for safer operation in seismic or vibration-prone areas. The double-wall jacket maintains product temperature without external heating blankets, cutting energy loss during holding periods. We route the jacket with a circulation port so you can connect a chiller or heater loop as needed.

Material selection depends on what you store. For food, beverage, and dairy, we default to SUS304 with a 180-grit interior polish and Ra ≤ 0.8 µm finish to meet clean-in-place requirements. For chloride-rich chemicals or high-temperature processes, SUS316L is the safer call. We weld with full-penetration TIG, then grind and passivate every seam. The outer jacket is standard 304 with a brushed finish, but we can match a specific sanitary standard if your facility requires it.

The top head includes a manway for inspection, a pressure/vacuum port, and an optional spray ball for automated washing. The level gauge is a magnetic flap type with a 4–20 mA transmitter, so you can read level locally and remotely. We also provide thermowells for PT100 sensors and a vent with a hydrophobic filter if you\’re storing sterile media.

This tank is not a one-size-fits-all product. We fabricate to your working volume, diameter, and height. The pressure rating—whether atmospheric, 0.6 MPa, or higher—must be specified before we start, because the shell thickness, head shape, and nozzle welds all change. Vacuum service is a different beast; we\’ll design stiffening rings and a vacuum-rated flat bottom if you need it.

Typical Applications

• Dairy and beverage storage with temperature hold
• Pharmaceutical intermediate hold tanks
• Chemical mixing and storage where insulation prevents heat loss
• Water treatment reagent holding

Specifications

FAQ

Q: How do I choose between 304 and 316L?
If your product contains chlorides, acids, or high salt content, go with 316L. For general food and water, 304 is fine.

Q: Can I use this tank for vacuum service?
Yes, but we need to reinforce the shell and flat bottom. Provide the vacuum level and we\’ll design accordingly.

Q: What cleaning method is supported?
Standard CIP spray ball is included. We can add a return line and slope the bottom for complete drainage.

Q: Do you supply the tank with a skid?
We can, but most clients mount directly on a concrete pad. We\’ll give you anchor bolt patterns.

When you request a quote, tell us the product to be stored, working volume, material grade, operating temperature, tank diameter, and any pressure or vacuum requirements. Also mention your cleaning frequency and whether you need an agitator or additional nozzles. That way we can send a drawing and a price that matches your real process.