Check valve (diaphragm) of submersible pump Sprut 4S QGD (EPDM)

Check valve membrane for submersible borehole pump Belamos SP 40/5, Maxima 4QGD-0.37, Werk 4QGD1.2-50-0.37, 4QGD1.8-50-0.5, Rudes, IBO SQIBO 0.75, APC, Sprut 4S QGD (EPDM) 0.5-, 1.2-50-0.37 (A36)
Gate valve 4SQGD (Ø91*40) (guma) NPO (A36)

The distance between the holes diagonally is 72 mm
External diameter 92 mm
The inner size of the hat is 40 mm