Check valve C D E A B IN OUT Symbol Check Valve (K): 1/8, 1/4, 3/8 Model AKM2000 AKM3000 AKM4000 Bypass port size 1/8, 1/4 1/8, 1/4 1/4, 3/8 Applicable model ACG20/ACG20A ACG30/ACG30A ACG40/ACG40A A 40 53 70 B 40 48 54 C 28 34 42 D 11 14 18 E 11 13 15 Model AKM2000 AKM3000 AKM4000 Specifications Effective area (mm2) 28 55 111 AKM 30 00 01 Check valve Bypass port size for redirecting air flow A check valve with intermediate air release port can be easily installed to prevent a back flow of lubricant when redirecting the air flow and releasing the air on the outlet side of the regulator. Be sure to use above check valves when redirecting the air flow on the inlet side of the lubricator. Threads for IN and OUT ports are not machined. Body size Thread type Nil N F Rc NPT G Symbol 01 02 03 Port size 1/8 1/4 3/8 20 �� �� . 30 �� �� . 40 . �� �� Body size 20 30 40 How to Order . Refer to the Standard Specifications and Attachment on page 546 or 549 for the standard bypass port size when the check valve is used with ACG. Bypass port size for redirecting air flow 557 Series ACG Air Combination Attachments RoHS AC-A AF-A AF�ｮ-A AR-A AL-A AW-A AC AF AF�ｮ AR AL AW�ｮ A�ｮG E�ｮ AV AF