The X-PK503 is a PK series MECHANICAL pressure switch (pressure controller): a diaphragm and spring operate an SPDT contact at an adjustable set point with adjustable differential. It has no display, no 24 V electronics, no PNP/NPN output and no Modbus.
Specifications
| Model | X-PK503 |
|---|---|
| Type | Mechanical pressure switch, SPDT contact |
| Operating pressure | -0.05 - 0.3 MPa |
| Adjustable differential | 0.035 - 0.15 MPa |
| Factory setting | OFF 0.2 MPa / ON 0.1 MPa |
| Max. airtight test pressure | 1.65 MPa |
| Media | Air, refrigerant, non-corrosive liquid |
| Media temperature | -10 to 100 C |
| Connection | PT1/4 |
| Contact rating | 250 VAC: 8 A full load, 10 A non-inductive |
| Protection | IP40 |
| Scale | MPa and kgf/cm2 |
Order code
- PK - pressure switch
- 503 - range -0.05 - 0.3 MPa
- (blank) - PT1/4 connection
The X- prefix is the listing code used by the supplier; the figures above are those of the standard AirTAC PK switch. Confirm the exact variant with us before ordering.
Source: AirTAC PK pressure controller datasheet (PK503 / PK506 / PK510). Only catalog figures are listed. Ask us for the drawing before relying on a dimension, weight or rating that is not shown here.
Returns will be accepted for up to 15 days of Customer’s receipt or tracking number on Not used items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
- Received the wrong item.
- Item arrived not as expected (ie. damaged packaging).
- Item had defects.
- Over delivery time.
- The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.





