Stainless Steel 350 Gallon Tank 55-Gal Drum Lid Diaphragm Pump 50"T x 45.5"D

Stainless Steel 350 Gallon Tank 55-Gal Drum Lid Diaphragm Pump 50"T x 45.5"D

This is a stainless steel 350-gallon liquid storage and mixing tank configured with a standard 55-gallon drum-style top lid, a top-mounted diaphragm pump, and an included T-bar paddle agitator. The tank was designed for pump-in/pump-out liquid handling — it has no bottom drain valve; all input and output ran through the top-mounted pump and plumbing assembly. It is being sold AS-IS for parts or repair. The diaphragm pump has cracked from weathering and is non-functional.

Specifications & What's Included

• Tank capacity: 350 Gallons (US)
• Inner dimensions: 50" tall x 45.5" diameter
• Upper port / lid opening: 22" diameter (standard 55-gallon drum lid format)
• Overall external dimensions: 48" W x 48" D x 76" H
• Approximate weight: 532 lbs
• Construction material: Stainless steel body
• Lid type: Bolt-down 55-gallon drum-style lid with clamp hardware
• Drain: None — pump-in/pump-out configuration only
• Top-mounted diaphragm pump: Included — cracked from weathering, non-functional (AS-IS)
• Apollo Conbraco ball valve (yellow handle) on top plumbing assembly
• Inlet/outlet pipe fittings and flexible hose connections on top
• T-bar paddle agitator/mixer: Included as a separate piece
• Support: Four steel pad feet / leveling feet
• Shipping: Freight required — contact seller for a quote prior to purchase

Applications

Stainless steel vertical storage tanks of this type are commonly used in food and beverage processing, chemical blending, pharmaceutical manufacturing, agricultural liquid storage, and industrial fluid handling where corrosion resistance and sanitary construction are required. The 55-gallon drum lid format allows standard drum-lid accessories (gaskets, pressure-vacuum vents, fill ports) to be used directly. The pump-in/pump-out design without a bottom drain is typical of mixing or holding tanks where a submerged or top-mounted pump transfers product in and out, and where a bottom drain would be impractical given the tank's size or placement. The included T-bar agitator paddle mounts into the top port to manually or mechanically stir the tank contents. At 350 gallons, this is a mid-size bulk liquid tank suited to batch processing, blending, or secondary storage roles. Given its age and current as-is condition, it may be best suited to parts recovery, fabrication projects, or a buyer who can service or replace the pump and restore the system.