Blackhall aluminum bronze gate valves Series 4400 are designed and engineered specifically for marine applications.

They have a blow-out-proof spindle made to a one-piece, high-strength design.

They have a long-life, low-torque spindle thread, and a lightweight ergonomic aluminium handwheel.

A colour-coded handwheel option is available- the handwheel can be anodised blue, green, red or yellow.

The valves have a precision-lapped seat ensuring tight shut-off, and a screwed bonnet and "difflock" design locking ring.

The valves are full bore.