KEYSTONE.NA.NA “VITON RATED SEAT RING FOR 550A BUTTERFLY VALVE (PART NO 246-360)
KEYSTONE.NA.FIGURE 793 “PNEUMATIC POSITIONER
ARTICLE No. M1014-001
SUPPLY: 1/4″”BSP , SIGNAL : 1/8″”BSP”
KEYSTONE.NA.Fig.791/B “PNEUMATIC POSITIONER
ARTICLE No. M1014-001
SUPPLY: 1/4″”BSP , SIGNAL : 1/8″”BSP”