Check valve (diaphragm) diameter 67 mm for submersible pump Sprut, Rudes, NPO+, Sprut 3S QGD, 3 DS 1027 Vitals, WERK 3QGD1.85-70-0.37 (73028), ALBA 3QGD 1.85-70 and other similar pumps
Compatible with models
NPO/ Sprut (A36): 3S QGD1-30-0.37; 3S QGD1-40-0.55; 3S QGD1-65-0.75;
(B04): 3S 0.8-30-0.37; 3S 0.8-40-0.5