Alchem are pleased to announce the arrival of additional safety features to our comprehensive range of tank manways. In addition to the Safety Bolt, Meshes and Crosses we now offer Air Actuated Locking Devices and Magnetic Proximity Switches. These additions to our comprehensive range of high pressure and atmospheric manways allow us to offer you the complete solution for your vessel closure design.
Safety Bolt for pressure & vacuum release
Air Actuated Locking Device
Magnetic Proximity Switches
Security Grids, Meshes and Crosses
Safety Bolt
The safety bolt has been developed to ensure operator safety remains paramount. This product is offered as a standard option with all our high pressure manways but is also suitable for use with our atmospheric range. The bolt operates on a cam principle and simultaneously raises the lid and vents any residual pressure or vacuum. This prevents any dangerous blow back of the lid under pressure and helps to un-stick the lid in vacuum conditions. This is a particularly useful option for applications with gas or compressed air.
Air Actuated Locking Devices
The locking device consists of a Double Acting Air Actuator and is usually mounted on the neck ring and can be operated remotely from a control panel or locally by the operator. Often used in conjunction with the proximity switch, these two devices can be linked to a control panel and operated fully automatically as part of a cycle such as filling and cleaning or inspection.
Magnetic Proximity Switches
These devices are used in a variety of applications from simply detecting that the lid is open or closed or they can be installed as part of a control loop. Here the Agitator supply or the Cleaning Cycle can be linked to the proximity switch and the system will only operate when the lid is safely closed. This is commonly used to ensure operator safety where the vessels have to be filled manually. Here the switch is used to break the circuit when the lid is open and thus preventing the agitator from running or can be used to stop the cleaning cycle.
Security Grid and Crosses
Several types of safety grids are offered including perforated plate, wire mesh and the more the common Marguerite Cross. These can be fixed into position permanently or can be fully removable or hinged to suit the customers’ requirements. The mesh and perforated plate are made from standard sheet products available in the market whereas the crosses are made from 8mm bar formed, welded and fabricated to suit the particular manway application.
For further details on the full range of manways, fittings, valves and fabrication services offered, please contact us on the following numbers.
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