Body Size: 20, Backflow: K (w/Backflow Function), Thread: N (NPT), Port Size: 02 (1/4), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale)

Body Size: 3, Set Pressure: 2 (1.5 to 116 psi [0.01 to 0.8 MPa]), Exhaust Direction: 0 (Bottom Exhaust), Thread: N (NPT), Port Size: 02 (1/4), Option: GH (Round Type Pressure Gauge + w/Hexagon Panel Nut, for Panel Mount), Semi-standard: Z (Name Plate & Pressure Gauge in Imperial Units: psi)

Body Size: 2, Set Pressure: 0 (Body Size 1, 2: 0.73 to 29 psi [0.005 to 0.2 MPa]; Body Size 3: 1.5 to 29 psi [0.01 to 0.2 MPa]), Exhaust Direction: 0 (Bottom Exhaust), Thread: Rc, Port Size: 02 (1/4), Option: GH (Round Type Pressure Gauge + w/Hexagon Panel Nut, for Panel Mount), Semi-standard: None

Body Size: 3, Set Pressure: 0 (Body Size 1, 2: 0.73 to 29 psi [0.005 to 0.2 MPa]; Body Size 3: 1.5 to 29 psi [0.01 to 0.2 MPa]), Exhaust Direction: 0 (Bottom Exhaust), Thread: Rc, Port Size: 02 (1/4), Option: GH (Round Type Pressure Gauge + w/Hexagon Panel Nut, for Panel Mount), Semi-standard: None

Body Size: 30, Backflow: w/o Backflow Function, Thread: Rc, Port Size: 03 (3/8), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: R (Right to Left), Knob: Downward, Pressure Units: Unit on Product Label: MPa, Pressure Gauge in SI Units: MPa

Body Size: 20, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 01 (1/8), Options: GH (G+H), Set Pressure: 1 (0.02 to 0.2 MPa Setting), Exhaust Mechanism: Relieving Type, Flow Direction: R (Right to Left), Knob: Y (Upward), Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale)

Body Size: 25, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 02 (1/4), Options: GH (G+H), Set Pressure: 1 (0.02 to 0.2 MPa Setting), Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale)

Body Size: 30, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 03 (3/8), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale)

Body Size: 20, Back Flow: w/o Backflow, Thread: N (NPT), Port Size: 01 (1/8), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: Polycarbonate Bowl, Bowl Guard: C (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

Body Size: 40, Back Flow: K (w/Backflow), Thread: N (NPT), Port Size: 03 (3/8), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: 8 (Metal Bowl w/Level Gauge), Bowl Guard: None, 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

Body Size: 20, Back Flow: w/o Backflow, Thread: F (G), Port Size: 01 (1/8), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: Polycarbonate Bowl, Bowl Guard: None, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb Fitting: None, Pressure Units: Product: MPa, °C; Pressure Gauge: MPa

Body Size: 20, Back Flow: w/o Backflow, Thread: N (NPT), Port Size: 02 (1/4), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: 6 (Nylon Bowl), Bowl Guard: C (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

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Option: GH (G + H), Semi-Standard: RYZ (R + Y + Z)

Body Size: 20, Thread: N (NPT), Port Size: 02 (1/4), Option: GH (G + H), Semi-Standard: 1NRYZ (1 + N + R + Y + Z)

Body Size: 25, Thread: Rc (Rc: for Sizes 20, 25, 30, 40; M5: for Size 10), Port Size: 02 (1/4), Option: GH (G + H), Semi-Standard: R (Flow Direction: Right to Left)

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Option: GH (G + H), Semi-Standard 1: 1 (0.02 to 0.2MPa Setting), Semi-Standard 2: Z (NPT Porting requires Z, Name Plate, Caution Plate for Bowl, & Pressure Gauge in Imperial Units: psi, °F)

Body Size: 25, Backflow: w/o Backflow Function, Thread: Rc, Port Size: 03 (3/8), Options: GH (G+H), Set Pressure: 1 (0.02 to 0.2 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: 30, Backflow: K (w/Backflow Function), Thread: N (NPT), Port Size: 03 (3/8), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale)

Body Size: 20, Back Flow: w/o Backflow, Thread: F (G), Port Size: 02 (1/4), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Bowl: Polycarbonate Bowl, Bowl Guard: None, Drain Port: w/Drain Cock, Exhaust Mechanism: Relieving Type, Flow Direction: Flow Direction: Left to Right, Drain Cock w/Barb Fitting: None, Pressure Units: Product: MPa, °C; Pressure Gauge: MPa

Body Size: 40, Backflow: K (w/Backflow Function), Thread: N (NPT), Port Size: 03 (3/8), Options: GH (G+H), Set Pressure: 0.05 to 0.85 MPa Setting, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Units: Z (Unit on Product Label: psi, Pressure Gauge: MPa/psi Dual Scale)