AMV Manufacturing

Custom Built Valves & Modifications

Unlike most knifegate valves our bonneted ash valve has a round gland sealing area, this will stop gland leakage experienced with conventional knifegate valves.

The gate is fully guided and pressed firmly on to the seat by the gate jams located on the center line of the bore, these jams are located outside of the flow path.

The large bonnet area allows process fluid to flow out freely not allowing build up or to jam the gate.

Unlike conventional knifegate valves, Normal flow is from the seat side of the valve so when the valve is closed there is no pressure on the gland packing or build up in the chest / bonnet area.

Unfortunately to allow this design work properly the face to face of the valve cannot comply with MSS-SP81.

Amv ash valves were first developed to handle ash discharge from a boiler on board a bulk handling ship. The requirements were:

• Bi-directional shut off
• No gland leakage
• No clogging or jamming

The ash valve has been used in many applications including under hoppers, pump suction and discharge isolation.

The option list has grown to include but not limited too the following.

Body materials