 
Body Size: 20, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), Attachment: V (Residual Pressure Relief 3 Port Valve), Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)
Body Size: 20, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), Attachment: V (Residual Pressure Relief 3 Port Valve), Semi-Standard 1: 3C (3 + C), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)
Body Size: 20, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), Attachment: V (Residual Pressure Relief 3 Port Valve), Semi-Standard 1: C (Bowl Guard), Semi-Standard 2: RZ (R + Z)
Body Size: 30, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), 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: 25, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), Attachment: V (Residual Pressure Relief 3 Port Valve), Semi-Standard 1: Standard, Semi-Standard 2: RZ (R + Z)
Body Size: 40, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), 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: 30, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), 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: 20, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), 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: 30, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), Attachment: V (Residual Pressure Relief 3 Port Valve), 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: 25, Thread: N (NPT), Port: 02 (1/4), Option: CE (C + E), Attachment: V (Residual Pressure Relief 3 Port Valve), Semi-Standard 1: 2 (Metal Bowl), Semi-Standard 2: Z (Name Plate, Caution Plate for Bowl, and Pressure Gauge: psi, °F)
Body Size: 20, Model Type: Air Filter + Regulator + Lubricator, Thread: N (NPT), Port Size: 02 (1/4), Float Type Auto Drain: C [N.C. (Normally Closed)], Pressure Gauge/Digital Pressure Switch: E (Square Embedded Type Pressure Gauge, w/Limit Indicator), Attachment: without Attachment, Set Pressure: 0.05 to 0.85 MPa Setting, Bowl Type + Lubricator: Standard (Polycarbonate Bowl + Lubricator)
Body Size: 20, Model Type: Air Filter + Regulator + Lubricator, Thread: NPT, Port Size: 1/4, Float Type Auto Drain: C [N.C. (Normally Closed)], Pressure Gauge/Digital Pressure Switch: Square Embedded Type Pressure Gauge, w/Limit Indicator, Attachment: without Attachment, Set Pressure: 0.05 to 0.85 MPa Setting, Bowl Type + Lubricator: Standard (Polycarbonate Bowl + Lubricator), Bowl Guard:
Body Size: 20, Model Type: Filter Regulator + Lubricator, Thread: NPT, Port Size: 1/4, Float Type Auto Drain: C [N.C. (Normally Closed)], Pressure Gauge/Digital Pressure Switch: Square Embedded Type Pressure Gauge, w/Limit Indicator, Attachment: without Attachment, Set Pressure: 0.05 to 0.85 MPa Setting, Bowl Type + Lubricator: Standard (Polycarbonate Bowl + Lubricator), Bowl Guard: w/Bowl
Body Size: -, Thread: -, Port Size: -, Mounting: -, Float Type Auto Drain: -, Pressure Gauge: -, Set Pressure: -, Bowl Type: -, Bowl Guard: -, Drain Port: -, Exhaust Mechanism: -, Flow Direction: -, Drain Cock w/Barb Fitting: -, Pressure Unit: -
Size: 1/8, Thread: NPT, Port Size: 1/4, Accessory: C+E, Attachment: Pressure Switch + Residual Pressure Relief 3 Port Valve, Option 1: None, Option 2: C [Bowl Guard (Size 2000 Only)], Option 3: Name Plate, Caution Plate for Bowl, and Pressure Gauge: PSI, °F
Size: 1/8, Thread: NPT, Port Size: 1/4, Accessory: C+E, Attachment: Check Valve, Option 1: None, Option 2: C [Bowl Guard (Size 2000 Only)], Option 3: Name Plate, Caution on Bowl
Size: 1/8, Thread: NPT, Port Size: 1/4, Accessory: C+E, Attachment: Pressure Switch + Residual Pressure Relief 3 Port Valve, Option 1: None, Option 2: C [Bowl Guard (Size 2000 Only)], Option 3: Name Plate, Caution on Bowl
Body Size: 20, Thread: NPT, Port Size: 1/4, Mounting: None, Float Type Auto Drain: N.C. Normally Closed, Pressure Gauge: Square Embedded Type Pressure Gauge, w/Limit Indicator, Set Pressure: 0.05 to 0.85 MPa Setting, Bowl Type: Polycarbonate Bowl, Bowl Guard: w/Bowl Guard, Drain Port: None, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb
Body Size: 20, Back Flow: w/Backflow, Thread: NPT, Port Size: 1/4, Options: C+E, Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: Polycarbonate Bowl, Bowl Guard: w/Bowl Guard, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb Fitting: None, Pressure Units: Z [Product: psi, °C; Pressure Gauge: psi (and MPa)]
Body Size: 20, Back Flow: w/o Backflow, Thread: NPT, Port Size: 1/4, Options: C+E, Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: Polycarbonate Bowl, Bowl Guard: w/Bowl Guard, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb Fitting: None, Pressure Units: Z [Product: psi, °C; Pressure Gauge: psi (and MPa)]