Q:I couldn't get a name off the valve as it sits. It has a leak on the top plate and i'd like to replace the valve plate as opposed to cutting the whole thing out and replacing.

I dont think they sell just the top plate by itself even if you could determine the mfgd. Cut out the entire old valve and replace it. Its not that big of a job.

Q:I have a 40 year old Holton Bb trumpet. It plays fine except the first valve always gets stuck when I play it, in the middle of a song it won't come back up. I can pull it back up and it doesn't get stuck real bad, but how can I fix this? I always oil it properly and insert the valves right. Do I have to replace it? Thanks

You need not replace the valve, but it does need a bit of attention. There are many possible reasons for the sticking and you can spend a long time trying to chase them down. Inconsistent sticking suggests 2 likely reasons (there are several more possible reasons). The first is piston wear that has slightly misshapen the valve casing so it sticks because it doesn't travel through the valve casing exactly the same way every time. The second is that the felts and corks are worn and need to be replaced. The best thing for you to do is to take it to a shop, describe the problem and spend a few bucks to get it fixed right.

Q:It's just a small 1 cylinder 1000 watt generator but thanks to contributors here, I verified the exhaust valve is pitted after I cleaned it all up with oven cleaner a toothbrush. My question is can I just replace the valve itself or do I need an entire new head? The seats still feel smooth.

You can replace just the valve. You should lap the valve to the seat though. That requires a lapping compound and some way to spin the valve. This is done before installing the spring. Lapping ensures that the valve is seated and won't leak. In the old days I have used comet cleanser and a small suction cup chucked in my drill. Worked fine. I know that is not the correct method but it worked and my mower ran for several years after that. Auto zone may have a valve lapping tool that they will loan out and you can buy some real lapping compound to do a better job. I always enjoyed getting the job done with what I had on hand. Good luck.

Q:I have a no start on a briggs and straon 16.5 OHV. It has spark, and fuel. and backfire's through the intake. I took off the top of the motor to check the key way and it was in place. I think its a valve timing issue but what times the valve? I have not removed the flywheel yet because i need a puller. Is there another key way under the flywheel that times the valves

you can,t tell if the key way is sheared by looking at the flywheel it has to be pulled, did you hit something when mowing? good indication that the key is sheared, the valves run off a cam like in a car if not then you have a burnt valve

Q:i was thinkin i needed rings cause my car was smokin like hell and had a bad compression test on one cylinder. anyways i got the head off and my valves are caked with black **** all down one side and the others are completely white. i dont know if when the car turns off if they're supposed to seal but four of them were about a quarter inch off the head. before i tested everything i was smokin like hell and barely runnin and you could hear a knockin sound in the exhaust at the rear of the car. could the head be the problem or still sound like rings??

have the head checked for level milling it may be warped if it has ever overheated..

Q:I'm looking for a way to fix my noisy piston valves on my full sized Yamaha tuba. It makes a loud, metallic clang whenever any of the valves are pressed or released. Thanks!

Piston valves normally have cork or felt cushions so that they don't clank when you operate them. You may be able to get replacements at the music store where you get your valve oil, and they may have a repairman on site or on contract who can do a professional referb on your instrument.

Q:please i want theory of MOTORIZED VALVE ? COURSE TITLE : MEASUREMENT AND CONTROL EXP. TITLE : CALIBRATION AND CHARACTERISTICS OF MOTORIZED VALVE

Your question is too broad for this forum Google your question Motorized valves Motorized actuators Hope this properly answers your question

Q:okay i have a 1990 plymouth laser. it runs very and the compression is good but it smokes. im thinking valve seals? Also i need to know the tool to remove the seals. Thanx

Could be, but first I would change the PCV and the hose going to it. At 18 years of age, it's prolly not pulling out the blowby. To chance the seals, you need a air line and a fitting that fits into the spark plug holes and a pressure line.

Q:Ok so i am 16 years old, and i have Aortic stenosis, bicuspid aortic valve, aortic regurgitation and an Enlarged aorta. I am soon going to be getting an aortic valve replacement. I am just wondering what happens before and after the surgery and how long i will be in the hospital, how long in the ICU, what kind of tubes/machines will i need? any information will help. thanks :)

They will probably do a tissue valve replacement so there would be no need for life long therapy of blood thinners. As for the post op. Our hospital recovers heart surgeries right in our cardiovascular intensive care unit. We do not reverse anesthesia, we let our patients wake up on their own. Because of this, we have them on a ventilator until they wake up and are functional enough to breath on their own. We also monitor things very invasively, so there are a lot of lines. We have a Swan Gantz catheter which measures the pressures in the heart, an ART line, which measures your blood pressure internally, and an I.V. that goes directly into your heart called a central venous line. Usually after you wake up from surgery, if all your pressures look good, we start to take out those invasive lines and we get you out of bed. Most of our patients are in our unit for 1-2 days if all goes well. Then we transfer them up to the telemetry floor for a couple of days and then we send them home. Valve replacement surgery is still a major surgery but we do them every day and the majority of our patients come out of surgery just fine and are home in a week.

Q:Mitral valve prolapse have impression on lifetime?please answer with source

Mitral valve prolapse (MVP) is the most common heart defect in population. The prevalence of MVP is about 0.6–2.5%. The occurrence increases with age, and the highest is in young woman. MVP is diagnosed by transthoracic echocardiography when displacement of mitral valve leaflet(s) above the annulus into the left atrium during a systole is present (Fig. 1). The clinical symptoms of the disease are connected with instability of the autonomic nervous system. Fig. 1 Two-dimensional echocardiographic long axis parasternal view of mitral valve prolapse. MV mitral valve, LV left ventricle, LA left atrium, RV right ventricle, Ao aorta Such a large population of patients becomes a problem of social significance, and it is extremely important to determine the influence of MVP as a chronic disease on patients. That is why our trial to evaluate the health-related quality of life (HRQOL) in children with MVP was undertaken. There are many publications concerning MVP in adult patients, but no study on their quality of life has been found. The literature concerning HRQOL of children with heart defects is not very extensive; the authors analyzed the problem of patients with serious conditions, such as hypoplastic left heart syndrome, transposition of the great arteries, pulmonary atresia, tetralogy of Fallot and non-complex heart defects, like ventricular or atrial septal defect [1–3]. The aim of our study was to evaluate the quality of life of children with MVP and the impact of clinical symptoms on HRQOL. You will detailed information on the link given in sources, as it is long topic.