This is a legacy product, and replaced byAC40A-06-B
Body Size: 60, Back Flow: K (w/Backflow), Thread: Rc, Port Size: 06 (3/4), Options: E (Square Embedded Type Pressure Gauge, w/Limit Indicator), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: 6 (Nylon Bowl), Bowl Guard: None, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: R (Flow Direction: Right to Left), Drain Cock w/Barb Fitting: None, Pressure Units: Product
Body Size: 40, Backflow: K (w/Backflow Function), Thread: Rc, Port Size: 06 (3/4), Options: E (Square Embedded Type Pressure Gauge, w/Limit Indicator), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa
Body Size: 40, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 06 (3/4), Option: Standard, Attachment: V1 (3-Port Valve for Residual Pressure Release; Mounting: V+AF+AR), Semi-Standard 1: 6 (Nylon Bowl), Semi-Standard 2: Standard
Body Size: 50, Thread: N (NPT), Port: 06 (3/4), Option: E [Square embedded type pressure gauge (with limit indicator)], Attachment: TV (T + V), Semi-Standard 1: 3 (Lubricator w/Drain Cock), Semi-Standard 2: RZ (R + Z)
Body Size: 50, Thread: N (NPT), Port: 06 (3/4), Option: G (Round Pressure Gauge w/Limit Indicator), Attachment: S (Pressure Switch), Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)
Body Size: 40, Thread: N (NPT), Port: 06 (3/4), Option: G (Round Pressure Gauge w/Limit Indicator), Attachment: V (Residual Pressure Relief 3 Port Valve), Semi-Standard 1: Standard, Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)
Body Size: 40, Thread: N (NPT), Port: 06 (3/4), Option: DG (D + G), Attachment: Standard, Semi-Standard 1: 8 (Metal Bowl w/Level Gauge), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)
Body Size: 40, Thread: F (G), Port Size: 06 (3/4), Option: Standard, Attachment: Standard, Semi-Standard 1: Standard, Semi-Standard 2: Standard
Body Size: 40, Thread: N (NPT), Port Size: 06 (3/4), Option: DG (D + G), Attachment: Standard, Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: RZ (R + Z)
Body Size: 40A, Thread: N (NPT), Port Size: 06 (3/4), Option: Standard, Attachment: V (3-Port Valve for Residual Pressure Release), Semi-Standard 1: Standard, Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)
Body Size: 40, Thread: N (NPT), Port Size: 06 (3/4), Option: Standard, Semi-Standard 1: 8J (8 + J), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)
Body Size: 40, Thread: Rc, Port Size: 06 (3/4), Option: w/o Bracket; w/o Auto Drain, Semi-Standard 1: 6 (Nylon Bowl), Semi-Standard 2: Standard
Body Size: 50, Thread: N (NPT), Port: 06 (3/4), Option: Standard, Attachment: Standard, Semi-Standard 1: 3 (Lubricator w/Drain Cock), Semi-Standard 2: RZ (R + Z)
Body Size: 40A, Thread: F (G), Port Size: 06 (3/4), Option: DG (D + G), Attachment: Standard, Semi-Standard 1: Standard, Semi-Standard 2: Standard
Body Size: 50, Thread: N (NPT), Port Size: 06 (3/4), Option: BC (B + C), Semi-Standard 1: 6 (Nylon Bowl), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F), Made to Order: X2141 (w/Element Service Indicator)
Body Size: 40, Thread: N (NPT), Port Size: 06 (3/4), Option: G (for Sizes 20, 25, 30, 40 Round Type Pressure Gauge w/Limit Indicator; for Size10: Round Type Pressure Gauge w/o Limit Indicator), Attachment: Standard, Semi-Standard 1: 3 (Lubricator w/Drain Cock, Exhaust Port), Semi-Standard 2: RZ (R + Z)
Body Size: 40, Thread: N (NPT), Port Size: 06 (3/4), Option: BC (B + C), Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: Z (NPT Porting requires Z, Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)
Body Size: 40, Thread: N (NPT), Port: 06 (3/4), Option: G (Round Pressure Gauge w/Limit Indicator), Attachment: V (Residual Pressure Relief 3 Port Valve), Semi-Standard 1: 3 (Lubricator w/Drain Cock), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)
Body Size: 50, Thread: N (NPT), Port: 06 (3/4), Option: G (Round Pressure Gauge w/Limit Indicator), Attachment: Standard, Semi-Standard 1: 8 (Metal Bowl w/Level Gauge), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)