Body Size: 20, Thread: F (G), Port Size: 02 (1/4), Option: Standard, Semi-Standard 1: J (Drain Guide: 1/8 for Body Size 20; 1/4 for Body Size 30 & 40), Semi-Standard 2: Standard

Body Size: 30, Thread: F (G), Port Size: 02 (1/4), Option: Standard, Semi-Standard 1: J (Drain Guide: 1/8 for Body Size 20; 1/4 for Body Size 30 & 40), Semi-Standard 2: Standard

Body Size: 40, Thread: Rc, Port Size: 02 (1/4), Option: B (Bracket), Semi-Standard 1: Standard, Semi-Standard 2: Standard

Body Size: 20, Thread: N (NPT), Port Size: 02 (1/4), Option: B (Bracket), Semi-Standard 1: J (Drain Guide: 1/8 for Body Size 20; 1/4 for Body Size 30 & 40), 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: 30, Thread: Rc, Port Size: 02 (1/4), Option: Standard, Semi-Standard 1: J (Drain Guide: 1/8 for Body Size 20; 1/4 for Body Size 30 & 40), Semi-Standard 2: Standard

Body Size: 40, Thread: F (G), Port Size: 02 (1/4), Option: Standard, Semi-Standard 1: Standard, Semi-Standard 2: Standard

Body Size: 40, Thread: N (NPT), Port Size: 02 (1/4), Option: BC (B + C), Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)

Body Size: 20, Thread: Rc, Port Size: 02 (1/4), Option: B (Bracket), Semi-Standard 1: J (Drain Guide: 1/8 for Body Size 20; 1/4 for Body Size 30 & 40), Semi-Standard 2: Standard

Body Size: 40, Thread: F (G), Port Size: 02 (1/4), Option: C (N.C., Float Type Auto Drain), Semi-Standard 1: Standard, Semi-Standard 2: Standard

Type of Actuation: 2 (2 Position Double), Manifold Type: 40 (Base Mounted Non Plug-in Single/Stacking Base, Plug-in Stacking Base), Pilot: Internal Pilot, Specifications: Standard, Voltage: 3 (110VAC 50/60HZ), Electrical Entry: D (DIN Terminal w/Connector), Lead Wire Length: None, Surge Suppressor: None, Manual Override: Non-locking Push Style, A, B Port Size: 02 (Base Mounted w/Sub-plate

Type of Actuation: 2 (2 Position Double), Manifold Type: 40 (Base Mounted Non Plug-in Single/Stacking Base, Plug-in Stacking Base), Pilot: Internal Pilot, Specifications: Standard, Voltage: 5 (24VDC), Electrical Entry: D (DIN Terminal w/Connector), Lead Wire Length: None, Surge Suppressor: Z (Light & Surge Suppressor), Manual Override: E (Push-turn Locking Lever Style), A, B Port Size: 02

Series: 5, Actuation: 1 (2 Position Single), Piping: 40 (Base Mounted), Port Size: 02 (1/4 Thread Piping or 1/4 w/Sub-plate)

Series: 5, Actuation: 2 (2 Position Double), Piping: 40 (Base Mounted), Port Size: 02 (1/4 Thread Piping or 1/4 w/Sub-plate), Thread: T (NPTF)

Type of Actuation: 2 (2 Position Double), Manifold Type: 40 (Base Mounted Non Plug-in Single/Stacking Base, Plug-in Stacking Base), Pilot: Internal Pilot, Specifications: Standard, Voltage: 3 (110VAC 50/60HZ), Electrical Entry: G (Grommet Lead Wire 0.3m), Lead Wire Length: None, Surge Suppressor: Z (Light & Surge Suppressor), Manual Override: Non-locking Push Style, A, B Port Size: 02 (Base

, Inlet: 40 [0 to 4000 psig (0 to 28 MPa)], Gauge Port, Outlet: L [-30 in.Hg to 60 psig (-0.1 to 0.4 MPa)], Pressure Gauge Unit: psig/bar (or None in Case of no Gauge), Seat Material: PCTFE, Standard, Flow Specification: Standard, Cv: 0.9

), Gauge Port, Inlet: 40 [0 to 4000 psig (0 to 28 MPa)], Gauge Port, Outlet: V3 [-30 in.Hg to 30 psig (-0.1 to 0.2 MPa)], Pressure Gauge Unit: psig/bar (or None in Case of no Gauge), Seat Material: PCTFE, Standard, Flow Specification: Standard, Cv: 0.09

, Gauge Port, Inlet: 40 [0 to 4000 psig (0 to 28 MPa)], Gauge Port, Outlet: V3 [-30 in.Hg to 30 psig (-0.1 to 0.2 MPa)], Pressure Gauge Unit: psig/bar (or None in Case of no Gauge), Seat Material: PCTFE, Standard, Flow Specification: Standard, Cv: 0.09

The VS3135 and VS3145 series have been in production for more than 40 years.
There are no interchangeable current products, but the following models are listed for reference.

AN□02 series: It features 35 dB(A) noise reduction, and uses flame-resistant material (equivalent to UL-94 standard V-O) for the main body. Only 1/4, 3/8, and 1/2 port sizes are available.
(Reference 1) Standard AN series compact resin type silencer: 30 dB(A) noise reduction

Body Size: 20, Thread: N (NPT), Port Size: 02 (1/4), Option: Standard, Attachment: Standard, 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)