A checked accumulator and a main spool with memory spring are used to ensure a shift back to the home position, for times when air supply may not be adequate. It also utilizes bonded spool technology in the main valve for superior reliability beyond existing diaphragm technology. The MAC Pulse Valve utilizes the MAC 46 Lifting series balanced pilot technology to ensure fast, repeatable pulses. *seal compatibility testing may be required Reliable operation in extreme environments.Available in 2-way and 3-way configurations.With fewer wear points than traditional valve technology the LBV is designed to last. The MAC LBV employs D-Flex™ technology to provide an exceptionally tight seal preventing leakage and saving you product and money.ĭ-Flex™ technology also allows the LBV to last longer and perform stronger in the toughest applications. With fast response times, reliable shifting forces and repeatable results – due to its patented balanced design - the MAC LBV is ideal for applications that demand reliable, low-leak performance*. The Liquid Bullet Valve® is the latest design innovation from MAC. This OEM integrated cartridge design includes these MAC trademark features: This innovative design is unprecedented in the market in its ability to provide speed, repeatability, long life and high flow in a unique cartridge package. The new MAC Bullet Valve® represents yet another evolution to air valve technology from MAC Valves, Inc. The balanced poppet, fast response, and high flow of these two MAC Valves provide outstanding performance characteristics for the PPC. Feedback is obtained from one or two transducers. The valves are operated by the PPCs closed loop electronic control circuit. The key to the MAC PPCs are two MAC 34, 45, 400, 47, 92 or 93 Series valves that are used to control the output pressure. The MAC Proportional Pressure Controller, (PPC) is an innovative product which converts an electrical signal into a proportional pneumatic output. Our one piece bonded seal spool means longer life and easy maintenance.ĩ3 Series | 6500 Series | 82 Series | 1800 Series |6300 Series Their balanced spool means the valve can be piped as a 4-way, 3-way, 2-way, normally closed or normally open or can be used for vacuum, diverter or selector applications. MAC 4-way valves offer solenoid pilot operated, air pilot or manual operation. In-line and manifold mount versions are available.Ģ4 Series | 42 Series | 44 Series | 45 Series | 46 Series | 700 Series | 400 Series | 48 Series | 900 Series The MAC 4-way valves come in direct solenoid as well as solenoid pilot operated for compact size, fast response and high flows. They can be converted for use in vacuum and it can be changed from an Internal Pilot to an External Pilot function.ĥ2 Series | 55 Series | 56 Series | 57 Series | 58 Series | 69 Series These features translate into high shifting forces, fast consistent response times, high flow in a small package and long life.ġ00 Series | 31 Series | 35 Series | 1100 Series | 36 Series | 37 Series | 200 seriesĪ 3-way balanced spool valve piloted by a small direct operated balanced poppet valve. It features a short stroke solenoid with oval armature, a balanced poppet and powerful return spring. Total cost for the parts was around 50 dollars.High flow direct solenoid operated 3-way poppet valve. For Audio output, a volume-adjustable 3W PAM8403 amp and two Apple iMac G4 internal speakers are utilized for 44KHz stereo playback. I used a 4GB card, but any size could be used. Also required is an SDHC MicroSD card to store the Chime MP3 file. The updated method uses an MOL-AU5120 mp3 module from MDFly Electronics. This video of the old chime shows that the ISD1820 lacks the rich sound of the original Apple. The details of that method are found in this post. Althought the solution worked, the sound quality simply wasn't that great due to the limitations of the module. It worked, but was only an 8KHz recording that was done over-the-air to the module from an iPad. Up until recently, I've used the Arduino ISD1820 sound recorder module to emulate the Apple Chime. There are other methods of doing this, I'm sure, but this was an inexpensive and versatile solution which produced excellent results. Its installed in three completed iMac G5 A1076 projects that I've done for myself and other family members over the last 2 months. I've recently worked out a simple solution for the Apple Startup Chime. Building a CustoMac Hackintosh: Buyer's Guide
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