SEAT RING FOR BUTTERFLY VALVE (MAKE KEYSTONE)SIZE 350A, JIS 10K MATERIAL VITON RATED KEYSTONE.NA.FOR VALVES NO: CO 518 ,CO 501
SEAT RING FOR BUTTERFLY VALVE (MAKE KEYSTONE)SIZE 200A, JIS 10K MATERIAL VITON RATED KEYSTONE.NA.FOR VALVES NO: CO 503 ,CO 520
SEAT RING FOR BUTTERFLY VALVE (MAKE KEYSTONE)SIZE 300A, JIS 10K MATERIAL VITON RATED KEYSTONE.NA.FOR VALVES NO: CO 579