Tecmark Pressure Switch - 3902/3
£26.92
INC VATProduct Details
This pressure switch is manufactured by Tecmark and labelled with part numbers 3902 (with screws for ring terminal electrical connections) or 3903 (without screws). This switch may also be found on Hydroquip equipment with a part number 34-0178. In either case this is the same switch unit only labelled differently.
These switches convert a pressure signal to an electrical output in response to a change in pressure and movement of an elastomeric diaphragm which opens and closes an electrical circuit based on a set pressure.
Electrical connection is via the 2 x 6mm spades or 2 x screws for ring terminals.
Inductive rating: 1 amp @ 120 vac
Pilot duty: 72 pilot duty @ 24 vac
The switch is connected to the heater with a 1/8" MPT (Male BSP) thread.
The unit is easy to replace, but it is advisable to drain the spa to prevent water damage through spraying of water onto the circuit board as this switch may be found inside the control box.
Important Information:
Our ranges must be installed by a competent individual or tradesman, that is trained within the industry. Spa Packs and other computerised equipment are exempt from our returns policy if they have been opened or installed. If the spa pack is suspected as being faulty, it will need to be returned to us within the warranty period and will then be forwarded to the manufacturer for inspection. If deemed to be faulty, we will replace under warranty. If the board is not at fault or is found to have been damaged due to installation, an additional charge will be required to cover the costs of shipping and return.
Please ensure this is the correct Spa Pack as this item is non-refundable - If you are unsure, please contact our friendly customer service team for advise & support
Technical Specifications
| Sash 1 | Tecmark |
| Sash 2 | Adjustable PSI |
| Sash 3 | Ranges 1 - 5 PSI |
| Sash 4 | Replacment Part |
| Hide package contents in basket | Hide |
Downloads
Reviews (1)
Reviews (1)
Wasn't sure if correct one but ordered and luckily it was exactly the same fitted to my Strong Cyprus spa. Good delivery time and advice
Questions & Answers
Related Products
- Tecmark Pressure Switch - 4755P
Adjustable PSI
28 In StockSame day dispatch by 14:006715£34.08(inc VAT)SAVE £8.52 - Tecmark Pressure Switch - 4010P
Alternate to Tecmark 4037P
8 In StockSame day dispatch by 14:009440£31.61(inc VAT)SAVE £7.90 - Sundance Spas Jacuzzi Pressure Switch Alternative
Alternative to 4037P
8 In StockSame day dispatch by 14:009440£31.61(inc VAT)SAVE £7.90 - Pressure Sensor / Transmitter - Voltage Output
0 Bar Min / 0.1 Bar Max
Out of StockNot available to be ordered10735£478.80(inc VAT)SAVE £120.00 - Len Gordon - Pressure Switch
Adjustable PSI
Out of StockNot available to be ordered3216£22.79(inc VAT)SAVE £5.69 - Gecko - DTEC-1 Pressure Switch - 1.5PSI
For in.clear Systems
1 In StockSame day dispatch by 14:00PSI-10431£48.64(inc VAT) - Tecmark Pressure Switch - Balboa M3 Heater Tubes
Adjustable PSI
1 In StockSame day dispatch by 14:000705£56.13(inc VAT)SAVE £14.03 - 7 In StockSame day dispatch by 14:009642£30.44(inc VAT)SAVE £7.60
- PresAir - Pressure Switch - TNP411R-1.8PR
1/8" NPT with Center Air Spout
Awaiting DeliveryCan be put on back-order8142£51.36(inc VAT)SAVE £5.70 - Vacuum Switch Dryseal
Single Pole 2 Terminals
3 In StockSame day dispatch by 14:003667£56.99(inc VAT) - Gecko - DTEC-1 Pressure Switch - 2PSI
1/8" NPT - 1A - 5V/120V Rated
5 In StockSame day dispatch by 14:00PSI-7030£65.46(inc VAT) - HydroQuip Pressure Switch Guard
White Plastic
1 In StockSame day dispatch by 14:006255£6.66(inc VAT)SAVE £1.66 - Pahlen Pressure Switch
Used in Compact Heaters
28 In StockSame day dispatch by 14:008150£65.00(inc VAT)SAVE £13.00 - Watkins Pressure Switch: Electronic 2-Wire 3-Pin
For Caldera & Watkins
Out of StockNot available to be ordered8289£147.91(inc VAT) - Tecmark Vacuum Switch - VP4003P-DX
2000WI Preset, 1/8" Thread
Available to OrderNot enough physical stock available in retailable warehouse to fulfil, but is on demand5099£43.23(inc VAT)SAVE £9.49
