Hex shaped plated steel or stainless steel part designed to attach the stop port on 2-way normally open and 3-way valves to a piping system using NPT threads. See literature for connection size.
Ambient Temperature:
Temperature of the media surrounding external surfaces of a valve.
Ampere Rating:
Current drain when the valve is energized.
Bubble Tight:
Sealing capability within the valve which is virtually undectectable during a pressure decay test time period. Approximately equal to 1X10-5 cc/sec using air.
Burst Pressure:
The pressure differential between internal and external surfaces of a valve which will cause the pressure containing parts to rupture resulting in an external leak.
Cv Factor:
A dimensionless coefficient or value which indicates relative flow capacity of a valve, defined as the gallons of water per minute (USGPM) at 60° F, which will flow through the valve at a one (1) PSIG pressure drop.
Coil Insulation Class Rating:
Coil magnet wire insulation rating. Exceeding this rating causes premature coil failure.
Class B: 130° C (266° F)
Class F: 155° C (311° F)
Class H: 180° C (356° F)
Coil Voltage:
Voltage at which the coil must be energized if the valve is to perform as stated in the specifications. Normally, the coil voltage tolerance is +10% to -15% of rated coil voltage.
Continuous Duty:
Coils rated for continuous duty are designed to be energized continuously without overheating or failure. All Solenoid Solutions Inc. standard valves are equipped with coils rated for continuous duty.
No power applied to the coil. Typically, this is the "fail-safe" condition. A normally closed valve is closed when the coil is de-energized.
Differential Pressure (delta P):
Pressure difference between the inlet and outlet of a valve.
100 PSIG Inlet Pressure, 50 PSIG Outlet Pressure, Differential Pressure = 50 PSIG

120 PSIG Inlet Pressure, Atmospheric (0 PSIG) Outlet Pressure, Differential Pressure = 120 PSIG

50 PSIG Inlet Pressure, Vacuum Outlet, Differential Pressure = 65 PSIG (Assumes perfect vacuum)

Atmospheric (0 PSIG) Inlet Pressure, Vacuum Outlet, Differential Pressure = 15 PSIG (Assumes perfect vacuum)
Direct Acting:
In direct acting solenoid valves, the solenoid plunger directly opens or closes the orifice when the coil is energized or de-energized.
Directional Control:
Type of valve whose function is to divert a flow of media from one inlet line to one of two outlet lines.
Duty Cycle:
The ratio of "on" time to "total cycle" time. If a valve is on for 2 seconds and off for 8 seconds, the total cycle time is 10 seconds and the duty cycle is 20%.
Power applied to the solenoid valve coil causing the valve to change state. A normally closed valve will open when energized.
A device whose primary function is to remove contaminants from the flowing media. Solenoid Solutions Inc. recommends that a filter be placed directly before its solenoid valves.