‧内藏零件用螺丝组装成整体件，便于装配与维修。
完整型号如下：
PV2R2-41-L-RAA-40 PV2R2-41-F-RAA-40 PV2R2-47-L-RAA-40 PV2R2-47-F-RAA-40 PV2R2-53-L-RAA-40 PV2R2-53-F-RAA-40 PV2R2-59-L-RAA-40 PV2R2-59-F-RAA-40 PV2R2-65-L-RAA-40 PV2R2-65-F-RAA-40 PV2R2-75-L-RAA-40 PV2R2-75-F-RAA-40
