The AV-600 linkage is used to field assemble MA-521x, MF-5x13, MP-521x, MP-541x, MPR-561x, MPR-571x, and MPR-581x round hydraulic actuators to 1/2 inch through 2 inch VB-7xxx and obsolete VB-9xxx twoway and three-way valve bodies.Features AV-600 provides direct couple interface between MA, MF, MP, and MPR-5xxx actuators and 1/2 inch to 1-1/4 inch VB-7xxx valve bodies.