FAQ

1. What is standard pressure connection?
The standard pressure connection for all Winters pressure switches is 1/4" NPT female. 1/2" NPT male is available as an option.

2. What is a set point adjustment?
Pressure switches actuate at a given set point. This is set at the factory but can also be pre-set according to customers’ specifications. Winters pressure switches are field adjustable (screw type) and can therefore be easily adjusted on-site. The set point adjustment is located inside the housing to prevent tampering.

3. Which type of pressure switch will have the longest service life?
In general, diaphragm actuated switches will have the highest cycle life, followed by the piston type and then bellows type.

4. What is switch “chatter” and how does it affect service life?
Switch “chatter” is the major cause of switch contact burnout. If the deadband setting is too small, a switch will continually open and close for only minimal changes in the process input pressure. This is to be avoided as much as possible as it will shorten the life of a pressure switch.

5. How many types of sensing elements do Winters’ pressure switches have?
Winters utilizes two types of sensing elements: diaphragm and bellows.

6. Can I order switches without a cover?
Yes. Winters offers pressure switches without cover/housing or fully housed. Certain applications call for wiring to be exposed to allow for wiring, easy set point adjustments, or installation into panels. However, housing brings the advantage of covering the wires from possible industrial hazards and can be ordered as NEMA 4X, 12 or 13.