Valves on IBCs: What to Specify and Why

Ball vs. butterfly

Ball valves are positive shut-off, lower-pressure-drop, and slightly more durable. Butterfly valves are typically cheaper, slightly slower to open and close, and tolerant of suspended solids in the product. For most industrial liquids either will do; for products with particulate the butterfly is the safer call.

Two-inch vs. three-inch

Two-inch is the industry default and what your transfer pump is almost certainly plumbed for. Three-inch valves exist for high-flow drain applications (under-truck unloading, gravity drains into large reactors) but require pump-end adaptation.

Gasket material

• EPDM — general chemistry, water-based products, mild acids/bases. The default.
• Viton (FKM) — aggressive solvents, hydrocarbons, higher temperature. Premium cost.
• Silicone — food-grade applications, specific personal-care products.
• PTFE — high-purity, extreme chemistry, no-leach applications.

When to swap vs. replace the whole tank

A leaking valve is almost always a gasket or seat issue, not a bottle issue. Swap the valve; do not replace the tank. We sell replacement valves and gaskets a la carte for exactly this case.