Check valves TA-Luft with lever & weight revised
The stem and the material combination of packing, adapter, bearing and stem was determined after intensive tests.
The different material combinations prevent blocking of the stem during long time operation.
The surface quality of the packing area and the stem were optimized according to the instructions of the packing manufacturer to ensure a continuous tightness according to the “TA-Luft – VDI 2440”.
The packings are spring loaded and compensate slight deformation of the graphite / PTFE packings even at high switching frequencies. The adjustable weight can be adjusted according to the operating conditions.
This version is particularly suitable in the area of tank farms, pumping stations for the installation in horizontal and vertical piping – by simply repositioning the lever.
A large bonnet ensures enough space for maintenance / inspection even when installed.
The nominal sizes DN 40 – DN 400 with pressure rating PN16 and PN40 are available mostly ex stock in carbon steel 1.0619. Stainless steel 1.4408 version is also available in short times.