Model: 31, Orifice: 3 (3mm), Style: 4 (COM, Single Unit), Option: Q (SS/Ag, Seal: Poppet-FFKM, Fixed-PTFE, Class H, Steam), Suffix: Z (Oil-free), Port Size: 01 (1/8), Thread: Rc, Voltage: 8 (48VAC 50/60HZ), Electrical Entry: G (Grommet), Surge Suppressor: S (w/Surge Voltage Suppressor), Rectifier: None (for DC or AC Class H Coil), Bracket: B (Bracket)

Model: 33, Orifice: 4 (4mm), Style: 0 (N.C., Single Unit), Option: C37, Seals: NBR, Class B, Suffix: Z (Oil-free), Port Size: 03 (3/8), Thread: Rc, Voltage: 5 (24VDC), Electrical Entry: G (Grommet), Surge Suppressor: S (w/Surge Voltage Suppressor), Rectifier: None (for DC or AC Class H Coil)

Model: 31, Orifice: 3 (3mm), Style: 1 (N.C., Manifold), Option: For Air -- Seals: NBR, Body: Brass, Coil: Class B, Suffix: Z (Oil-free), Voltage: 5 (24VDC), Electrical Entry: G (Grommet), Surge Suppressor: S (Surge Suppressor), Rectifier: None (for DC or AC Class H Coil)

Model: 31, Orifice: 3 (3mm), Style: 1 (N.C., Manifold), Option: For Air -- Seals: NBR, Body: Brass, Coil: Class B, Suffix: Z (Oil-free), Voltage: 6 (12VDC), Electrical Entry: D (DIN Connector), Surge Suppressor: S (Surge Suppressor), Rectifier: None (for DC or AC Class H Coil)

Model: 33, Orifice: 3 (3mm), Style: 5 (COM., Manifold), Option: A (For Oil -- Seals: FKM, Body: Brass, Coil: Class B), Suffix: Z (Oil-free), Voltage: 5 (24VDC), Electrical Entry: G (Grommet), Surge Suppressor: S (Surge Suppressor), Rectifier: None (for DC or AC Class H Coil)

Model: 32, Orifice: 2 (2.2mm), Style: 1 (N.C., Manifold), Option: For Air -- Seals: NBR, Body: Brass, Coil: Class B, Suffix: Z (Oil-free), Voltage: 6 (12VDC), Electrical Entry: G (Grommet), Surge Suppressor: S (Surge Suppressor), Rectifier: None (for DC or AC Class H Coil)

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KZ (K + Z)

Body Size: 40, Thread: N (NPT), Port Size: 06 (3/4), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: Z (psi as Unit Displayed on Label), Made to Order: X1 (Body: Red)

Body Size: 30, Thread: N (NPT), Port Size: 02 (1/4), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: Z (psi as Unit Displayed on Label), Made to Order: X1 (Body: Red)

Body Size: 40, Thread: N (NPT), Port Size: 03 (3/8), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KRZ (K + R + Z), Made to Order: X1 (Body: Red)

Body Size: 20, Thread: N (NPT), Port Size: 02 (1/4), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: Z (psi as Unit Displayed on Label), Made to Order: X1 (Body: Red)

Body Size: 50, Thread: N (NPT), Port Size: 10 (1), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: Z (psi as Unit Displayed on Label), Made to Order: X1 (Body: Red)

Body Size: 40, Thread: N (NPT), Port Size: 02 (1/4), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: Z (psi as Unit Displayed on Label)

Body Size: 30, Thread: N (NPT), Port Size: 02 (1/4), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KZ (K + Z)

Body Size: 50, Thread: N (NPT), Port Size: 10 (1), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KZ (K + Z)

Body Size: 50, Thread: N (NPT), Port Size: 06 (3/4), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: Z (psi as Unit Displayed on Label), Made to Order: X1 (Body: Red)

Body Size: 20, Thread: N (NPT), Port Size: 01 (1/8), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KRZ (K + R + Z)

Body Size: 20, Thread: N (NPT), Port Size: 02 (1/4), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KRZ (K + R + Z)

Body Size: 30, Thread: N (NPT), Port Size: 03 (3/8), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KZ (K + Z)

Body Size: 40, Thread: N (NPT), Port Size: 04 (1/2), Handle/Bonnet Material: B (Aluminum), Options: S (Built-in Silencer, EXH Port), Semi-Standard: KZ (K + Z)