US NUMATICS solenoid valve model description

Founded in 1945, NUMATICS has been developed and manufactured with pneumatic components and components that are widely used in automation machinery in various industries around the world. NUMATICS has been recognized as a pioneer in international fluid components and has created more than 10 “world first developments”. The new technology has been widely adopted by manufacturers all over the world. It is famous all over the world for its precision-matched all-air suspension valve sleeve combination. NUMATICS is not only the first brand of pneumatic control materials sales in the United States, but also the leader in the world pneumatic component industry. status. In terms of solenoid valves, the heart of the NUMATICS valve - the valve plug sleeve assembly is the patented design of NUMATICS, which was designed in 1949 and was applied to the four-way five-way interface valve in 1954. Through nearly 50 years of application practice by customers all over the world, this structure has become famous for its high quality of NUMATICS pneumatic components. US NUMATICS precision pressure reducing valve, high pressure regulation accuracy - up to 0.1%, high repeatability, stable start, stable pressure, input pressure and flow changes have little effect on output pressure, especially from off to 20.16m3 / Hr, this performance is particularly good, the back pressure is sensitive, self-locking ability, temperature stability, specially designed stainless steel alloy airbag, can be installed at any angle, interface caliber: G1/4 G3/8, suitable for printing, Tension control in the packaging machinery industry. US NUMATICS solenoid valve, aftercooler, dryer, filter, membrane drying tube, modular combination FRL assembly, high flow FRL assembly, precision pressure reducing valve, modular electromagnetic soft start quick exhaust valve, air bag, etc. The heart of each Numatics valve, the spool sleeve assembly, is a patented design from Numatics. This design began in 1949 and was fully applied to the four-way five-port valve in 1954. The application practice of customers around the world for nearly 50 years shows that this structure has become famous for the high quality of Numatics pneumatic components. Its main features are:

First, the full gas suspension valve plug valve sleeve structure valve core, valve sleeve are made of 440c stainless steel, ultra-precision machining, to achieve high precision tolerance, the gap is only 1μm. Because they are paired with abrasive polishing components, they are not interchangeable and must be supplied in sets.

When the airflow enters through the small hole in the valve sleeve, an air film is formed in the small gap between the valve core and the valve sleeve, and the valve core is automatically centered in the valve sleeve. When the spool moves over such an air bearing, as if it were suspended in the air molecular field, there is no metal-to-metal contact at all. This air suspension structure brings the following benefits:

(1) The precise fit between the core sleeves forms a reliable seal. The "○" ring dynamic seal containing many fault factors is completely abandoned.

(2) This is a long-life structure that is theoretically wear-free.

(3) The air bearing allows the valve to work in a completely unlubricated condition after certain filtration. Compared with other oil-free lubricating components (actually coated with a non-volatile grease), this is a true oil-free lubrication.

(4) The moving spool has a very small starting force and a constant operating force, which is the primary condition for manufacturing a high quality direct acting valve. It does not rely on pilot pressure to operate the direct acting valve to a vacuum of 21 bar (or even 35 bar).

(5) The same material of the core sleeve has the same thermal expansion coefficient, and the air bearing can be ensured at high temperatures. Second, the floating valve sleeve structure valve sleeve is fixed in the valve body by six "○" ring floats, the gap is large, the fit is very loose, and can be gently pushed in by hand when installing. This is necessary to ensure that the core and the sleeve are precisely matched with the gap, because this avoids the deformation caused by the additional torque caused by the valve body installation or the nozzle due to the temperature change, and prevents the jamming from occurring.

Third, multiple anti-pollution structure pollution is one of the important reasons for the effectiveness of pneumatic valves. Even when the air treatment conditions are good, there are still pollutants entering the valve body. For this purpose, a multi-anti-contamination structure has been prepared for the valve plug:

(1) The intake hole around the valve sleeve limits the entry of 70% of the sized particles.

(2) The core sleeve is heat treated to a hardness of HRC58-62. The inner edge of the small hole of the valve sleeve and the outer edge of the valve body shoulder are chamfered and sharp. This edge is an ideal cutter and can be cut. Any particles of foreign matter entering the small hole of the valve sleeve are broken and carried away by the air flow.

(3) The small gap between the core sleeve and the polished surface make small particle impurities (<0.6μ) unable to adhere to the gap, and are removed by "self-cleaning" during the movement. This anti-pollution structure is very effective. The company used the jeweler's grinding red mud powder 5μ particles mixed into the air, and the valve for long-term commutation test (20 million times), the results show that the valve movement is flexible, observe the edge of the core sleeve without curling.

Fourth, the balance structure

(1) The driving force of the spool is small, which is convenient for the design of the direct acting valve.

(2) During the movement of the spool, the ports are not collapsible, that is, there is no air leakage to the exhaust port.

(3) Direct-acting valve design is recognized as the most complicated and difficult design in the international aerodynamic industry. The company's balanced direct-acting valve, the supply pressure can be supplied to any interface or two interfaces of P, A, B, EA, EB, completely changing the concept of the original interface definition, which leads to the expansion of the valve function, providing Deformation and multi-purpose structure of the valve application circuit. More than 60 types of takeovers such as dual pressure control and double flow control can be completed. In summary, the unique design of the valve plug sleeve assembly has its inherent resistance to impurities and adhesion, and the wear-free air suspension characteristics allow the valve to operate without problems for many years. This high reliability, maintenance-free, unmatched longevity performance and adaptability to a wide range of working environments make Numaskics valves the longest-lived component of a complete machine. Varieties include: aftercooler, dryer, filter, membrane drying tube, modular combination FRL assembly, high flow FRL assembly, precision pressure reducing valve, modular electromagnetic soft start quick exhaust valve, modular safety locking valve, 2000 series valve island, ISO6431 profile cylinder, ISO6432 finger cylinder, thin cylinder, rotary cylinder, rodless cylinder, air bag, hydraulic buffer, throttle valve, exhaust valve, silencer, quick-connect connector, etc. Models: L01 series linear valve (L01SA459, L01SS459, L01SS559, L01SS659); L1 series pilot valve (L11BA452, L11BB452, L11BB552, L11BB652, L11BB752); L2 series pilot valve (L22BA452, L22BB452, L22BB552, L22BB652, L22BB752); compact ISO series valves E12BA4004000061; S series microvalve HSM2L7F00B; NAF series solenoid valve and air control valve (NAF25000G, NAF25010G, NAF25100G, NAF25110G, NAF25200G, NAF25210G, NAF25300G, NAF25310G, NAF25420G, NAF25400G, NAF25410G, NAF25470G, NAF25450G, NAF25460G, NAF25670G NAF25650G, NAF25610G, NAF26000G, NAF26010G, NAF26060G, NAF2603G2/2, NAF26030G3/2, NAF 2610AG 2/2, NAF26100G3/2, NAF 2615AG 2/2, NAF26150G3/2, NAF 2620AG 2/2, NAF26200G3/2