... 4H,4R,SH,3R,R5. Our company offers various of hand valve series,such as 4H,4R,3R,R5.Our company ... series,such as 4H,4R,SH,3R,R5.The hand pulled valve belongs to manual chang-over element, spool began to ... of the air current when the valve is operated by hand,Please choose the filtered impressed air with grease when application ... 60Position and Port Number5 Ports 2Position 3 Ports 2 Position Hand vavle