Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: FV4 (1/4 Inch Face Seal, Female), Connection 2: FV4 (1/4 Inch Face Seal, Female), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: FV4 (1/4 Inch Face Seal, Female), Connection 2: MV4 (1/4 Inch Face Seal, Male), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: MV4 (1/4 Inch Face Seal, Male), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: TW4 (1/4 Inch Tube Weld), Connection 2: TW4 (1/4 Inch Tube Weld), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All Other

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PWC [2 Ports (1-In; 2-Out)], Connection 1: FV4 (1/4 Inch Face Seal, Female), Connection 2: TW4 (1/4 Inch Tube Weld), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: FV4 (1/4 Inch Face Seal, Female), Connection 2: FV4 (1/4 Inch Face Seal, Female), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: FV4 (1/4 Inch Face Seal, Female), Connection 2: MV4 (1/4 Inch Face Seal, Male), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: MV4 (1/4 Inch Face Seal, Male), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: TW6 (3/8 Inch Tube Weld), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All Other

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: H (Hastelloy® C-22), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: MV4 (1/4 Inch Face Seal, Male), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All Other

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: H (Hastelloy® C-22), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: TW4 (1/4 Inch Tube Weld), Connection 2: TW4 (1/4 Inch Tube Weld), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All Other Connections

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: V [7 μin. (0.18 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: FV4 (1/4 Inch Face Seal, Female), Connection 2: FV4 (1/4 Inch Face Seal, Female), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: TW4 (1/4 Inch Tube Weld), Connection 2: TW4 (1/4 Inch Tube Weld), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All Other Connections

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: MV4 (1/4 Inch Face Seal, Male), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: H (Hastelloy® C-22), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: TW4 (1/4 Inch Tube Weld), Connection 2: TW4 (1/4 Inch Tube Weld), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All Other Connections

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: X [5 μin. (0.13 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: FV4 (1/4 Inch Face Seal, Female), Connection 2: MV4 (1/4 Inch Face Seal, Male), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: FV4 (1/4 Inch Face Seal, Female), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: FV4 (1/4 Inch Face Seal, Female), Connection 3: None, Connection 4: None, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: 15 μin. (0.4 μm) Standard, Ports: 2PWA (1-In; 2-Out), Connection 1: MV4 (1/4 Inch Face Seal, Male), Connection 2: FV4 (1/4 Inch Face Seal, Female), Connection 3: No Port, Connection 4: No Port, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to

Model: 550 [Normally Closed (N.C.); 250 psig (1.7 MPa)], Material: S (316L SS Secondary Remelt), Surface Finish: M [10 μin. (0.25 μm)], Ports: 2PW [2 Ports (1-In; 2-Out)], Connection 1: TW4 (1/4 Inch Tube Weld), Connection 2: TW4 (1/4 Inch Tube Weld), Connection 3: No Port, Connection 4: No Port, Face to Face Dimensions: 2.12 Inch (53.8 mm) Standard for TW4; or Not Applicable to All Other