How to implement a valve maintenance program valvemax. Join abi from the dawkes workshop as she takes apart this edwards bass trombone valve section which features two axial flow or thea style. Edwards valve system trombone tenor t350e, thayer cylinder, edge. Jr33 6way valve operation and maintenance manual clark. Flush valve manual bleed turns the valve on manually by bleeding water off of the diaphragm. Manual onoff turn solenoid 14 turn counterclockwise to turn valve on manually. It emphasizes installation, troubleshooting, parts replacement, and calibration of control valves, actuators, positioners and digital valve controllers. This is usually caused by side load on the stem from the actuator stop bolt, etc. The thayer valve is an alternative for the traditional rotary valve found on. The thayer axialflow valve system introducing the thayer axialflow valve system for trombones, used by professional musicians in symphonies around the world.
But to keep it running year after year, and decade after decade, requires a regular maintenance plan. The reader requires a basic understanding of the trombone less than a years playing experience to fully use the manual. Remove the valve from the system and place it securely in a vice. We find that most brass players dont oil their valves nearly often enough. The thayer axialflow valve is a replacement for the traditional rotary valve found on. Maintenance recommendation for neles valves in black liquor evaporation process maintenance recommendation for neles rotary actuators and nd9000 ndx series valve controllers in black liquor evaporation process including recover y. How to begin a fire hydrant operation and maintenance. Developed to improve the flow of sound through the valve of the trombone, the thayer axialflow valve is crafted with a durability that will keep it beautiful and functional for many years. Proper maintenance procedures for excavators engineering360. Opens automatically when svn is inserted into the valved tee. These valves have a buried check valve beneath the bonnet grease. It can be used with an open loop drive to gravimetrically measure the flow of. Maintenance is easily done and will be described in detail within this page.
In this type of hydrant, the main valve moves jointly on a vertical axis against a. Valve maintenance and piping system protection is available in online maintenance training and course manual formats. This manual contains the necessary information to maintain a bass trombone. This will be matched by a bright wear spot on the outside shoulder of the spool. Performance audit of the public utilities departments valve maintenance program. Valved tee additional product information the original springloaded valve. A preventative maintenance program will directly improve the performance and safety of your valve processes. Valved tee additional product information thayer medical. Suggested packing gland torque values are listed in the technical information section of the high pressure equipment company catalog. The valve seat on the other hand is made of two pieces.
Improved maintenance practices which results in fewer maintenance related valve actuator failures, improved valve reliability and increased valve life. For control valves, the best plan is based on inservice diagnostics and predictive maintenance. Maintenance, set up and installation instructions air release valve for aqueducts mod. Perform pump and valve service during scheduled maintenance windows, instead of during emergency shutdowns. Thayer scales model mxl is a widely recognized general purpose low capacity weigh belt designed to operate accurately and reliably in harsh industrial environments with minimal maintenance. Lets talk about how we can extend the life of your valves so you can reduce your total cost of ownership while saving time and money. Supplemental personnel for shut downs, intensive pm schedules and other large maintenance activities.
Procedures for preventative maintenance treatment of. Ron knaflic shows us how to properly lubricate a tenor axial flow thayer style valve. Lubricants can be purchased by calling 18005626838. Tenor trombone axial flow valve lubrication youtube. The valve was the subject of a protracted legal battle between. The thayer valve is a major part of our trombone design because it offers zero distortion and freeblowing qualities that our competitors have tried to copy which, we have to say, makes us feel a. Look for a definite lip where the spool stops at either end of its travel.
Remove retaining clip and slip coil off solbase subassembly. Edwards continues to produce the benchmark of professional instruments through our careful attention to every detail. Edwards valve system trombone tenor t350e, thayer cylinder. Generally, in my opinion the thayer valves seem to offer the least resistance, followed by the hagmann, oversized rotor, and regular sized rotor.
Control valve maintenance training course overview this 4 day course details the functioning of valves and actuators and how they are installed and calibrated. Brass repair cam bass trombone axial flow valve disassembly. Over time, mineralization, rust and corrosion will affect the valve stem, springs, coils, nuts and other metal parts. Cudrc completed the first round of its valve evaluation in april 20 and is in the process of evaluating its system a second time. The main valve is located below the normal frost line to protect the hydrant from freezing, allowing the drybarrel hydrant to be used almost anywhere. If found, this should be corrected before installing a new valve. Following these maintenance procedures and keeping proper records will help reduce operating and unscheduled maintenance costs and keep your excavator in peak running condition. Inadequate maintenance no water or electricity power andor sensing lines external to the valve not connected. Finally, the thayer valve tends to be a bit higher maintenance then a. The valve guard, poppets, springs and wear shims are conventional. Maintenance, set up and installation instructions air. Covers maintenance and operation of gate, globe, ball, plug, check, and specialpurpose valves. Ten questions with steve shires the online trombone journal.
However, factors such as the amount of flow through the valve, the age of the valve, or its proximity to a main intersection on a busy street must also come into. On trombones with double rotary valves, the levers can be used to change the pitch from bvf, bv. All test questions are randomly selected from a database containing over. His intention was to address some of the problems with the popular thayer valve, in particular the maintenance issues caused by its relatively complex design a standard rotary valve turns the air flow as much as 90 degrees when it is engaged. Troubleshooting and maintenance guide for residential. It also has added a second vmt1 valve maintenance trailer with erv750 extendedreach valve exerciser from wachs. Practical control valve sizing, selection and maintenance. Push oiled intake valve 3 into the valve guide from the outside, slide on both valve springs outside 4 and inside 5 or single valve spring 17 and the valve spring retainer 6. Thayer company in albany manufactures top quality products. Your axial flow valve can provide you with a lifetime of usage if properly maintained. Crews maintain blowoff valves by locating the gate cap and ensuring the valve and blowoff cap are accessible. Therefore, use a globetype valve that has the feature to control flow by opening the bypass valve. Preventative maintenance for valves crane engineering. The first step in starting a valve maintenance program is to prioritise the valves.
Ventolo guarantees the proper functioning of the system allowing the release of air under pressure working principle the float, thanks to the force exerted by water, come. His intention was to address some of the problems with the popular thayer valve, in particular the maintenance issues. Advanced industrial valve repair and maintenance procedures during yearly plant shutdowns, its a good idea to take valves apart, clean the inner mechanisms and replace anything that is worn. Tighten the packing gland to the appropriate torque for the valve. A brand new control valve will operate at peak performance at least it should. Increased knowledge of valve design, construction, and function which in turn will improve workmanship, efficiency, and enhance the troubleshooting efforts. Modern repair department more than 40 years of experience. The hagmann valve is a rotary valve for trombone that was developed by rene hagmann in the early 1990s. Hagmann and rotary valves also seem to require less maintenance than thayer valves, in my opinion. A valve adjustment may be required, but this is a more complex issue and may need to be performed by the dealer. Preventative maintenance reduces operating costs eliminates most emergencies usually at 2 a. Preventative maintenance treatment of pipeline ball valves 2 the pipeline construction crew then preheats the pups or closures on each end of the valve prior to welding into the pipeline, welding takes place, the weld is xray inspected to verify the integrity of the weld. Mapag valve maintenance recommendations for psa units bac bar baxserie.
Invented by orla ed thayer with assistance from zig kanstul in 1976, it was the biggest advance in the design of the trombone since the rotary valve was added creating the f attachment in the mid19th century. Valves near critical customers such as hospitals are generally considered the most important. After maintenance operate the valve a few times to be sure of proper opening and closing. In 1976, orla ed thayer developed a mechanism which gives the air column a direct path through the rotary valve, with or without. It all depends on preference, and how much resistance you want. The operator must determine the key valves mark and identify it them on the map check the operation of the valve at least each calendar year at intervals not to exceed 15 months. Performance audit of the public utilities departments. Following are the inspection guidelines and the technical guidelines for checking of pneumatic control and shut down basis are given in annexurea and annexureb respectively. The thayer axialflow valve is a replacement for the traditional rotary valve found on trombones with f attachments. Periodically it is desirable to remove the valve sections from the bell. External bleed valve models have a knob or screw to turn and the water sprays out of the top of the valve.
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