Brass Liquid Solenoid Valve
Unlike the plastic solenoid valve, this one does not have a gasket, so there is no minimum pressure requirement.
We tried this solenoid at various DC voltages and found we could actuate it down at 6VDC (although it was a little slower to open). Here is the current draw table for various voltages. We suggest a TIP120 or N-Channel power FET with a 1N4001 kickback diode to drive this from a microcontroller pin. For a power supply, our 12V 5A power adapter will do the job.
6V 1.6 A
7V 1.86 A
8V 2.0 A
9V 2.3 A
10V 2.5 A
11V 2.7 A
12V 3 A
These solenoids are not rated for food safety by any official standards. However, they are made of cast brass, with a rubber gasket made of NBR (Nitrile Rubber) so it can be used with any fluid that will not damage or be damaged by the rubber gasket material.
1/2" Nominal NPS
Working Liquid Pressure: 0 Mpa - 1.0 Mpa (140 PSI)
Working Temperature: -5℃ - 80 ℃
Actuating voltage: 12VDC (but we found it would work down to 6V)
Actuating life: ≥ 50 million cycles
Dimensions: 105mm tall x 55mm wide x 65mm long