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Low cost, reliable, and robust gauge pressure switch available in a number of setting ranges from -1 Bar up to 42 Bar. Single switch output version with adjustable switching hysteresis. Available with wetted parts to suit most fluids. LPCB approved.
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Bailey & Mackey Pressure Switch Type 1381V
Low cost, reliable, and robust gauge pressure switch available in a number of setting ranges from -1 Bar up to 42 Bar. Single switch output version with adjustable switching hysteresis. Available with wetted parts to suit most fluids. LPCB approved.
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This pressure switch can be used for all applications where an electrical switch is required to close or open at a pre-set pressure ( or vacuum). The robustness of these pressure switches enables most applications to be satisfied. All connecting treads used in industry are available including British, American and metric. Flanged fittings are available and all types of Hygienic fittings can be supplied assembled directly onto the pressure switch.
Diaphragm Beryllium Copper
Seal Glass filled PTFE <11 bar
Nitrile rubber >11 bar
Base Brass
Housing Aluminium / Zinc diecast
Cover Glass Filled Nylon with Nitrile seal
To ensure long service life select the pressure range as follows:
Dynamic pressure applications Pmax = 75% of Range
Static pressure applications Pmax = 100% of Range
Maximum pressure that can be applied is 125% of pressure range.
Higher overload version available if required.
10 amp at 250V 50 Hz Inductive load
1 amp at 30V dc Inductive load
For other voltages and currents please consult our technical department.
±2%
Adjustable between approximately 5% and 95% of the switch range
–10 to +85 ºC (Process fluid must not solidify)
0.05 % of range per ºC from 20 ºC
Switches with standard wetted parts above are suitable for
applications using air, nitrogen, inert gasses, oils, water & steam.
Alternatives are available for use with other fluids.
Pressure Range | Hysteresis Typical |
-1 to 1 bar | 0.04 bar |
0.2 to 4 bar | 0.07 bar |
0.5 to 11 bar | 0.3 bar |
0.7 to 14 bar | 0.4 bar |
2 to 28 bar | 0.6 bar |
2 to 42 bar | 0.8 bar |
Material | Base | Diaphragm | Protection Disc |
316 Stainless Steel | Yes | No | Yes |
17/7 Stainless Steel | No | Yes | No |
Carbon Steel | Yes | No | No |
UPVC | Yes | No | No |
PTFE | Yes | No | Yes |
PVDF | Yes | No | No |
Silver Plate | No | No | Yes |
Pure Silver | No | Yes | Yes |
Halar Lined | Yes | No | No |
Dykor coated | No | Yes | No |
Rubber Lined | Yes | No | No |
Chrome Plated | Yes | Yes | No |
Direct switching of electrical loads at a pre-set vacuum or pressure for alarm or control purposes.
Versions for liquid or gaseous media, even in aggressive environments
Versions for use with viscous, chemically aggressive or contaminated media.
Pump Control
Fire Suppression Systems ( LCPB Approved)
Heating & ventilating Systems
Water Treatment
General Industrial Plant
This section is currently under construction.
Model numbers were redesignated during the 1990's.
The following table gives the current replacement model for each of the original model numbers:
Original Model Number | New Model Number |
107 or 108 | 1381 |
157 or 167 | 1481 |
115 or 1351 | 1581 |
207 or 208 | 2381 |
257 or 267 | 2481 |
215 | 2581 |
117 or 118 | 1382 |
167 | 1482 |
120P | 1392P |
Option code letters such as "V" or "Q" etc which were used with the original model numbers are still applied to the new model numbers in the same way.
Examples : Original model 107V = New model 1381V
Original model 207Q = New model 2381Q
A repair service is available for this product. However, as a relatively low cost product it is generally cheaper to replace with a new unit. Please call us or e-mail for details.
This section is currently under construction.
Datasheet for Bailey & Mackey Pressure Switches 1000 series
Download (1.47M)