Adjustable Pressure
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Adjustable Pressure
Question about a violin chin rest?
I recently bought a violin chin rest for my violin. Its a normal chin rest but the odd thing ive never seen is that instead of it being completely firm around the area that touches your shoulder, the bar is adjustable. Now when I play it sometimes when I put pressure on my neck, it curves towards me and becomes uncomfortable. Is there a way to keep it straight and firm?
i meant shoulder rest!!
Ha, you got me confused there for a minute until I saw you meant shoulder rest 
It is hard to tell really, some shoulder rests are meant to be flexible and bend a little, some are adjustable and some are fixed. The only way to say for sure is to take it to a qualified store dealing with violins and similar stringed instruments.
If you take lessons or classes, you might want to ask your teacher for his/her opinion.
It could be that you need to adjust the height a little, so that the chin and shoulder rest together makes it as comfortable as possible for you to play.
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Accel 74561 Adjustable Pressure Regulator $71.95 Accel 74561 74561 Fuel Pressure Regulator; Adjustable Pressure Regulator; |
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Accel 74750 Adjustable Pressure Regulator $106.95 Accel 74750 74750 Fuel Pressure Regulator; Adjustable Pressure Regulator; |
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Medline Airone Pressure System with Flaps, Adjustable $109.29 Medline Airone Pressure System with Flaps, Adjustable |
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Aquamist Adjustable Pressure Switch Rubber Boot Universal $6 Aquamist Adjustable Pressure Switch Rubber Boot UniversalRubber Boot for Adjustable Pressure Switch.Contact Us for special pricing. |
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Accel 74566 1 Piece Adjustable Pressure Regulator $80.98 Accel 74566 74566 Fuel Pressure Regulator; Adjustable Pressure Regulator; 1 Piece; |
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Sard Adjustable Fuel Pressure Regulator $229.99 SARD adjustable fuel pressure regulators for EFI engines utilizes extra light weight diaphragm assembly that provides excellent pulsation dampening to dampen the pressure spikes caused by high flow fuel pumps and cycling injectors especially non-fact |
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Fuel Pressure Regulator $105.99 Fuel Pressure Regulator; Adjustable Pressure Regulator; Multiport; |
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Bayou Classic Bayou Classic High Pressure Adjustable Regulator With Valve $25.9 Bayou Classic High Pressure Adjustable Regulator With Valve |
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SSBC Adjustable Proportioning Valve with Pressure Gauge $65.99 Universal application.Polished.Built-in gauge to moniter pressure at all 4 corners.Regulates rear brake pressure |
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Lumiscope Aneroid Blood Pressure Monitor with Adjustable Gauge, Blue, Adult $22.76 Lumiscope Aneroid Blood Pressure Monitor with Adjustable Gauge, Blue, Adult |
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#08-083 Operational Test of Adjustable Pressure Relief Valve
I recently had a high efficiency furnace installed, what is the reason it needs a fresh air intake?
The furnace sometimes has a problem firing and the installer(not hvac) thinks it is not getting enough air to fire. It eventually does fire. He removed a plug on the side of furace (about the size of a hockey puck) to allow more air in. It seems to work better but this is not how it is supposed to work. The intake is 3" pvc, 2 elbows, 18 ft long. He also measured gas pressure at two places. He thought the gas pressure coming in may be too high(12). he adjusted the internal pressure to specs. The intake pvc is not clogged. But if you remove it at the furnace it seems to fire normally. He seems to think that removing the plug is good enough. I want to make sure this is not bad for furnace and safe to run this way. Would an adjustable gas valve fix it?
Also, the gas water heater is still vented into chimney, it is in center of house. I have a slate roof so it is difficult to access chimney. The chimney has an elevated cover.
Any suggestions are appreciated.
The new high effiency furnaces need to draw their combustion air from outside the house. it's all about the negative pressure like mentioned above.And also as a safety to keep the combustion sealed from the ambient air in the house.
And like redbird mentioned your intake piping may be too restrictive, and may need to be replaced with a larger diameter pipe.
But everybody has overlooked the obvious.
Have you looked at the intake pipe outside?
It could be that the exhaust and intake are too close together causing the furnace to recycle the exhaust gases.
Since there is little to no O2 left in the exhaust it can cause the symptoms you've mentioned.
The exhaust should be turned up and away from the intake or straight out from the house and the intake should be turned down, to keep them at a minimum of 18" apart.
Check your manual to find out how far apart they should be and how they should be terminated.
Is it blocked by something?
Sucked up leaves etc etc.
A couple of leaves in the pipe can restrict it just enough without making it appear blocked.
I made a service call on a furnace one night for the exact same problem as yours and found the guys 6 yr old kid had stuffed a plastic bottle down into the pipe with a stick.
Just a couple more ideas for you to look at.
