Conaco Type 444 temporary strainers are designed for short-term protection of piping systems during commissioning, flushing, or after welding and maintenance activities. Typically installed between flanges upstream of pumps, control valves, turbines, flow meters, and heat exchangers, they retain weld slag, rust, debris, and particulates that must not reach downstream equipment.
Screens can be specified with double or triple layers, mesh on perforated plate, or mesh-on-mesh. For ferrous debris, magnetic assemblies are available. Mesh selection should consider particle size, flow rate, differential pressure, and intended service duration.
Temporary strainers do not replace permanent Y or basket strainers where routine cleaning is required. Removal or cleaning requires opening the flanged joint, isolation, depressurization, and gasket inspection upon reassembly.
On pump suction, a blocked strainer can reduce available NPSH; monitoring Δp or frequent inspection intervals are recommended.
When is removal required?
After flushing/commissioning, once the line is clean and startup procedures allow.
Actuator compatibility?
No. This is a passive filtration device.
When is custom sizing needed?
When existing spool, flanges, or piping class do not permit standard geometry.
Type 444
Standard Materials
Available Special Features
