However, as more than 40 years have elapsed since production started, we recommend switching to a VPA742-1-03*-F or VPA742-1-04*-F.
Note) The operating pressure range of VPA742 series valves is 0.2 to 1.0 MPa.
As for VSA4□20, VSA4□30, and VSA4□40 series valves, they are also still available and can be found in the web catalog.

Refer to “Lead wire length indication” in the “Auto Switches Common Specifications” section in the catalog, which can be found here.

For specific wiring methods, connection examples, and contact protection boxes for auto switches, refer to the “Prior to Use” section in the catalog, which can be found here.

Note 2) As the port size setting has changed, and the AMG150-03, AMG250-04, AMG350-06, and AMG450-10 have been discontinued.

VBA/VBAT Comparison Table

② For the VNA/VNB□03□ (air operated type, C.O. type), it is always used with 1 of the pilot ports pressurized.
③ Although the pilot exhaust port (bleed port) is an air release port, it is recommended that a silencer be installed to prevent the entry of foreign matter and to reduce noise.

For example, the element type used with an “FGDCA-03-B002N-B” is the “EB100-002N.” For details, refer to the respective catalogs.

Body Size: 30, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 03 (3/8), Option: D (N.O. Float Type Auto Drain), Attachment: Standard, Semi-Standard 1: Standard, Semi-Standard 2: Standard

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Option: M (Round Type Pressure Gauge w/Color Zone), Attachment: V1 (3-Port Valve for Residual Pressure Release; Mounting: V+AF+AR), Semi-Standard 1: Standard, Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Option: Standard, Attachment: V (3-Port Valve for Residual Pressure Release; Mounting: AF+AR+V), Semi-Standard 1: Standard, Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)

Body Size: 30, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 03 (3/8), Option: G (Size 20 25, 30, 40: Round Type Pressure Gauge w/Limit Indicator; Size 10: Round Type Pressure Gauge w/o Limit Indicator), Attachment: Standard, Semi-Standard 1: Standard, Semi-Standard 2: NR (N + R)

Body Size: 30, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 03 (3/8), Option: Standard, Attachment: Standard, Semi-Standard 1: Standard, Semi-Standard 2: NR (N + R)

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Option: Standard, Attachment: TV (T + V), Semi-Standard 1: 8J (8 + J), Semi-Standard 2: NZ (N + Z)

Body Size: 25, Thread: N (NPT), Port Size: 03 (3/8), Option: Standard, Attachment: Standard, Semi-Standard 1: Standard, Semi-Standard 2: NRWZ (N + R + W + Z)

Body Size: 40, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 03 (3/8), Option: C (N.C. Float Type Auto Drain), Attachment: T (T-Interface), Semi-Standard 1: Standard, Semi-Standard 2: Standard

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Option: G (Size 20 25, 30, 40: Round Type Pressure Gauge w/Limit Indicator; Size 10: Round Type Pressure Gauge w/o Limit Indicator), Attachment: T (T-Interface), Semi-Standard 1: J (Drain Guide 1/8: Size 20; Drain Guide 1/4: Sizes 25, 30, 40), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Option: Standard, Attachment: T (T-Interface), Semi-Standard 1: J (Drain Guide 1/8: Size 20; Drain Guide 1/4: Sizes 25, 30, 40), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)

Body Size: 30, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 03 (3/8), Option: D (N.O. Float Type Auto Drain), Attachment: V (3-Port Valve for Residual Pressure Release; Mounting: AF+AR+V), Semi-Standard 1: Standard, Semi-Standard 2: Standard

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Option: G (Size 20 25, 30, 40: Round Type Pressure Gauge w/Limit Indicator; Size 10: Round Type Pressure Gauge w/o Limit Indicator), Attachment: V1 (3-Port Valve for Residual Pressure Release; Mounting: V+AF+AR), Semi-Standard 1: Standard, Semi-Standard 2: RZ (R + Z)