Body Size: 20, Backflow: w/o Backflow Function, Thread: N (NPT), Port Size: 02 (1/4), Mounting: w/o Mounting Option, Set Pressure: 1 (0.02 to 0.2MPa), Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Unit: Z (Name Plate and Pressure Gauge in Imperial Units: psi)

Body Size: 20, Backflow: K (w/Backflow Function), Thread: N (NPT), Port Size: 02 (1/4), Mounting: H (w/Set Nut, for Panel Fitting), Set Pressure: 0.05 to 0.85 MPa, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Unit: Z (Name Plate and Pressure Gauge in Imperial Units: psi)

Body Size: 20, Backflow: K (w/Backflow Function), Thread: Rc, Port Size: 02 (1/4), Mounting: H (w/Set Nut, for Panel Fitting), Set Pressure: 0.05 to 0.85 MPa, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Unit: Name Plate and Pressure Gauge in Imperial Units; MPa

Body Size: 20, Backflow: K (w/Backflow Function), Thread: Rc, Port Size: 02 (1/4), Mounting: w/o Mounting Option, Set Pressure: 0.05 to 0.85 MPa, Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Unit: Name Plate and Pressure Gauge in Imperial Units; MPa

Body Size: 20, Backflow: K (w/Backflow Function), Thread: Rc, Port Size: 02 (1/4), Mounting: B (w/Bracket), Set Pressure: 1 (0.02 to 0.2MPa), Exhaust Mechanism: Relieving Type, Flow Direction: Left to Right, Knob: Downward, Pressure Unit: Name Plate and Pressure Gauge in Imperial Units; MPa

Body Size: 20, Backflow: K (w/Backflow Function), Thread: Rc, Port Size: 02 (1/4), Mounting: B (w/Bracket), Set Pressure: 1 (0.02 to 0.2MPa), Exhaust Mechanism: Relieving Type, Flow Direction: R (Right to Left), Knob: Downward, Pressure Unit: Name Plate and Pressure Gauge in Imperial Units; MPa

Body Size: 20, Thread: N (NPT), Port Size: 02 (1/4), Handle/Bonnet Material: B (Aluminum), Options: None, Semi-Standard: Z (psi as Unit Displayed on Label)

Body Size: 20, Thread: Rc, Port Size: 02 (1/4), Handle/Bonnet Material: A (Flame Resistant PBT)

Body Size: 20, Thread: Rc, Port Size: 02 (1/4), Handle/Bonnet Material: A (Flame Resistant PBT), Options: B (w/o Bracket)

Port Size: 02 (1/4), Differential Pressure Indication: 0 (None), Hydraulic Fluid: 0 (Petroleum), Element: P (Paper), Filtration: 020 (20 μm)

Port Size: 02 (1/4), Differential Pressure Indication: 4 (Differential Pressure Indicator), Hydraulic Fluid: 0 (Petroleum), Element: P (Paper), Filtration: 020 (20 μm), Bracket: B (With Bracket)

Port Size: 02 (1/4), Differential Pressure Indication: 5 (Differential Pressure Indication Switch), Hydraulic Fluid: 0 (Petroleum), Element: P (Paper), Filtration: 020 (20 μm), Bracket: B (With Bracket)

Port Size: 02 (1/4), Differential Pressure Indication: 0 (None), Hydraulic Fluid: 0 (Petroleum), Element: P (Paper), Filtration: 020 (20 μm), Bracket: B (With Bracket)

Port Size: 02 (1/4), Differential Pressure Indication: 4 (Differential Pressure Indicator), Hydraulic Fluid: 0 (Petroleum), Element: P (Paper), Filtration: 020 (20 μm)

Special Applications: 21- (Clean-room, Copper-free, Fluorine-free, Silicon-free), Size: 20, Backflow Function: K (Backflow Function), Thread: N (NPT), Port Size: 02 (1/4), Accessory: BG (B+G), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: 21- (Clean-room, Copper-free, Fluorine-free, Silicon-free), Size: 20, Backflow Function: None, Thread: N (NPT), Port Size: 02 (1/4), Accessory: BG (B+G), Specifications: 1 (0.005 to 0.2 MPa Setting), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: 21- (Clean-room, Copper-free, Fluorine-free, Silicon-free), Size: 20, Backflow Function: None, Thread: N (NPT), Port Size: 02 (1/4), Accessory: BG (B+G), Specifications: 3R (3+R), Pressure Unit: Z (Name plate & Pressure Gauge in Imperial Units: psi)

Special Applications: 21- (Clean-room, Copper-free, Fluorine-free, Silicon-free), Size: 20, Backflow Function: K (Backflow Function), Thread: Rc, Port Size: 02 (1/4), Accessory: BG (B+G), Specifications: 1R (1+R)

Special Applications: 21- (Clean-room, Copper-free, Fluorine-free, Silicon-free), Size: 20, Backflow Function: K (Backflow Function), Thread: Rc, Port Size: 02 (1/4), Accessory: GH (G+H), Specifications: 1R (1+R)

Special Applications: 21- (Clean-room, Copper-free, Fluorine-free, Silicon-free), Size: 20, Backflow Function: K (Backflow Function), Thread: Rc, Port Size: 02 (1/4), Accessory: H (Set Nut for Panel Mount), Specifications: 3 (0.008 to 0.6 MPa Setting)