2″ NPS / BSP Male IBC Vent – Pressure & Anti-Vacuum for IBC Tote Fill Port Lid with 4 psi Spring

SKU: HMVMN20MM027

Protect your IBC containers from dangerous pressure buildup and vacuum collapse with this dual-function vent. Designed for reliable, maintenance-free operation, it automatically relieves both positive pressure and vacuum conditions to keep your containers safe during filling, dispensing, and storage.

Key Features

This vent combines pressure relief and anti-vacuum functionality in a single, compact unit. The 2″ BCS G2 × 11.5 male thread is compatible with standard 2″ BSP and 2″ NPS fittings, making it a versatile fit for most IBC tote openings. The glass-filled polypropylene body delivers excellent chemical resistance and structural strength, while polypropylene elastomer seals ensure a tight, leak-free connection. A 316 stainless steel spring provides consistent, corrosion-resistant actuation over the life of the vent.

Specifications

Thread size: 2″ BCS G2 × 11.5 (fits 2″ BSP / 2″ NPS). Connection type: Male. Function: Combined pressure relief and vacuum relief. Body material: Glass-filled polypropylene. Seals: Polypropylene elastomer (G/P/P). Spring: 316 stainless steel.

Applications

Ideal for intermediate bulk containers (IBCs) used in chemical processing, agriculture, food and beverage, pharmaceutical, and industrial fluid storage. Suitable for a wide range of liquids where container integrity during temperature changes, pumping, or gravity dispensing is critical.

Why It Matters

Without proper venting, IBCs can deform or collapse under vacuum during dispensing, or bulge and leak under pressure from temperature swings or chemical off-gassing. This vent eliminates both risks automatically — no manual intervention required.