Jefferson's current catalog of standard products includes over 3,000 models between solenoid valves and magnetic level switches which satisfy different needs and industrial requirements to control the most diverse liquids and gases such as water, air, steam, oils, refrigerants, oxygen, liquid nitrogen, corrosive fluids and many others.


General Purpose
These are used in a great variety of systems and different industrial areas that handle water, air, steam, light oils, neutral gases and cryogenic fluids, from vacuum to high pressure and high temperature.

Some application examples are: automatic petrol and beverage pumps, sector-programmed park irrigation, sown land, dancing water fountains, oxyacetylene welding equipments, electric welding under inert atmosphere, fire- extinguisher systems, liquid or gas dosing, liquid level regulation, packing machines, water treatment systems, pneumatic expellers, car washing machines, building exterior cleaning machines, nickelplating process, galvanization, coffee machines, car systems against theft or gas selection systems, air heating systems, hot water, steam, hot oils, laboratory or industrial cryogenic systems, low and high vacuum regulation, ink drying systems, etc..


These are used for automation, for the security of combustion equipments for boilers, furnaces, etc, and for the oil and petrochemical industries.

1330/2030, 1332 and 1388 Series valves are especially designed to comply with the Resolutions, Regulations and Recommendations for the use of Natural Gas in industrial installations. They may be used with other gases, such as LPG, propane, manufactured gas, etc, as well as with air or any other non combustible neutral gas.

The maximum working pressure for 1330/2030 series Normally Closed diaphragm valves, when used as relief valves in Natural Gas burners, is 0.160 kg/cm2. With respect to the Normally Open valves of the same series it is 0.5 kg/cm2 with standard diaphragms and 2 kg/cm2 with reinforced diaphragms.

1330/2030 Series Normally Closed diaphragms valves are optionally provided with adjustable slow openings up to 10 sec.

1388 Series valves include a system that allows them to open in two stages, the first of which is quick and with adjustable opening percentage, and the second is time adjustable up to > 20 seconds. Both 1330 / 2030 and 1332 and 1388 Series are optionally provided with microcontacts for proof of closed valve. 1330 (Ø 1°) and 2030 Series have a reed switch, and the others have an SPDT microswitch.


These are used for refrigerating fluids in their different aggregation degrees. So the connections and construction materials are specific for commercial or industrial refrigeration systems. You shall find information about this kind of valves in the Refrigeration Manual.

3 4 5-Way 3, 4, and 5-Way Valves for Hydraulic and Pneumatic Use
These are 3, 4 and 5-way valves used to direct the flow needed to operate single or double acting cylinders. They are also used when two fluids are to enter the same circuit (convergence), or one fluid into two circuits (divergence).

Valves and Devices for Special Service
It groups valves and devices which specific designs are determined by the characteristic of the application and where that designs are restricted to the specific application, or when the service conditions such as temperature, pressure, flow or type of fluid or ambient conditions don't allow the use of conventional solenoid valves.


Float and Displacer Magnetic Level Switches
Jefferson has developed a wide range of float and displacer magnetic level switches, to be installed either inside or outside the container to be controlled.The magnetic system eliminates technical problems of other devices, such as blocked stuffing boxes, worn-out diaphragms, corroded electrodes, and besides, it offers the advantage of containing all the mechanical and electrical elements on the same hydrometric column.This arrangement saves time and cost of installation. Its high-quality mercury switches made of special "Pyrex" glass, allow to protect its operation from any factor affecting the electric contacts, such as suspended dust, humidity, etc., as well as preventing any possible "contact sticking" due to excess of current or shortcircuits.

Magnetic float level switches
There are two basic types: Internal float such as 1340 series, or External float (with pressure chamber) such as 1317, 2017 and 2049 series.

Electromagnetic mechanisms
One, two or three mechanisms arranged inside the switch housing with SPDT, DPDT or SPST mercury contacts, allow a wide range of functional combinations.SPDT dry contacts, normal or hermetically sealed, are provided as an option. Another type of construction is that for Marine Use,vibration or rolling proof, with SPDT dry contacts.


Strainers must be used wherever it is essential that the fluid flowing through pipe lines be maintained free of foreign solid matter, to assure the correct operation of the solenoid valve.


Cryogenic Use
1314, 1327 and 1390 Series solenoid valves are specially designed to control cryogenic flow. Cryogenic fluids include liquid oxygen, liquid argon, liquid nitrogen and liquid CO2.


Dust Collector Valves
Due to their special design, response time and flow, these are used for shaking dust collector sleeves by means of periodical pressurized air pulses.


2094 series valves have been designed to handle high pressure fluids such as gaseous fuels and offer the customer the ultimate in performance, resistance and efficiency under hard working conditions. In addition, the piston system allows perfect opening and shutoff through an 8 mm passage, by means of a pilot orifice suited for high pressure.