Solenoid valve variations for virtually any liquid or gas. 

Direct Acting
2-way Normally Closed and Normally Open
3-way Normally Closed, Normally Open, Universal Vacuum to 1050 psi
Cv to 1.7
Orifices to 3/8"
Brass, Stainless Steel bodies
Buna, Viton, EPR, Teflon, Rulon seals
1/8", 1/4", 3/8" NPT ports

Piloted Diaphragm
2-way Normally Closed & Normally Open
Vacuum to 250 psi 
Cv to 29
Orifices to 1-1/2"
Brass, Stainless Steel bodies
Buna, Viton, EPR, Teflon seals
3/8" to 2" NPT ports

Zero Differential Piloted Diaphragm
2-way Zero Differential, Normally Closed and Normally Open
3-way, Normally Closed and Normally Open
Vacuum to 200 psi
Cv to 28
Orifices to 1-1/4"
Brass, Stainless Steel bodies
Buna, Viton, EPR seals
3/8" to 2" NPT ports