Hard seal wafer type butterfly valve

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Quick Details

Standard or Nonstandard: Standard
Structure: Butterfly
Pressure: Medium Pressure
Power: Manual
Material: Stainless Steel
Temperature of Media: Medium Temperature
Media: Water
Port Size: DN50-1200
Place of Origin: Tianjin, China (Mainland)
Model Number: D373H/F-10/16/25

Packaging & Delivery

Packaging Details:	Standard export packaging(plywooden case) or as per clients' requirements
Delivery Detail:	within15-30 days after receipt of L/C or 30% deposit

Specifications

2"~48"
PN(MPa): 1.0/1.6
ISO, API, ASTM, ANSI, DIN, BS, JIS approved

Features:

1) Working temperature: -15~150°C

2) Applicable medium: fresh water, sea water, sewage, sir, vapor, food, medicine, acids, salt, alkalis, etc.

2) Materials:

Body: CI/DI/ALB/SS/CS

Disc: DI/ALB/SS

Stem: SS/CS

Seat: EPDM, PTFE.

Standard:

Design Standard: MSS SP-67, API609, EN593

End Flange: DIN, BS, JIS, ISO, ANSI.

Top Flange: ISO5211

Face To Face: API609, ISO5752 series 20, BS5155

Test&Check: API598

Small in size, lighe in weight, easy installation and maintenance.

Simple and compact construction, quick 90 degree on-off operation.

Minimized operating torque, energy saving.

Flow curve tending to straight line, excellent regulation performance.

Long service life, standing the test of tens thousands opening/closing operations.

BUbbles-tight sealing with no leakage ubder the pressure test.

Wide selection of materials, applicable to various medium.

Q:Are they referring to the nozzle orifice or are they talking about the diameter of the nozzle? Does it mean the inner diameter of the valve like in a globe valve?: A 12 inch valve means it is designed to fit with nominal 12 inch pipe. Most 12 valves are flanged so these valves would also be flanged to match as 12 piping flange. They would also be sized to match the appropriate flange rating as in 125#, 250#, 150#, 300# 600# and so on. As to the opening of the valve that will vary depending on the type of valve. For a gate valve it will be very close to 12 inch in diameter. For a globe valve it may be a bit smaller. In some cases you will see what it called a reduced port valve where in internal opening is smaller. This is more common with large ball valve where the smaller ball and opening makes the opening/closing torque less. These valves also tend to have a venturi shape on the inlet and out leading to be ball so the pressure drop is closer to a full opening valve.

Q:My 3rd valve keeps getting stuck when i play it, i have valve oil, but its just not working, help please: There are several possibilities. You may have buildup on either the valve or the casing. Cleaning it thoroughly should normally remove it, but every once in a Blue Moon it pays to take it in and have it professionally cleaned. They can inspect it at the same time and tell you if you have a bend or a ding in the casing. Sometimes they are really hard to spot, especially if they are hidden in one of the crevices of the detail work. A really good repair person can stick a scope down there and tell you if you have some kind of blockage in just a few minutes. The only way to really clean inside the casing yourself is to get a good bottle brush that fits inside with just a little bit of resistance. You should really get someone to show you how to do it the first time because you don't want to go scraping up the insides. There is one other possibility that is kind of rare. Sometimes you get some gunk up under the valve button and it sticks when you push it down. You should normally be able to see this just by looking underneath however. Best of luck and I hope you find your sticking point and are able to set it free.

Q:In aircraft reciprocating engine, if valve spring surge happen?1. Why happen?2. Affect to engine?3. Result?4. Feeling?: Its in a car engine but the fault is near the same. The good news is that in aircraft there are mostly multi-spring valve springs to help prevent the resonance problem that can happen with a single spring. (If one goes resonant, the other one doesn't.) I think what that means is that if you have valve spring surges in an aircraft engine, you probably have a broken spring or weak on the assembly. (just a guess but if they don't go resonant at the same time then how would you get the surge?) The affect, not good. Result - rough at a certain RPM or range of RPM even temp. related Feeling - rough

Q:So just yesterday i bought a second-hand ytr 2320e. After i bought it, i washed it and tryed playing it, but when i press the first valve, there is this small metal scraping metal sound kinda like if you scratch a metal bowl with a fork. I think it has something to do with the spring but im not sure.also, i was wondering if the trumpet valves are supposed to be very easy to press, or if they take a tiny bit of push.: No, there shouldn't be any scraping sounds. Yikes! It may be simply that the spring guide is misaligned. I'd pull the valve and try to make sure it locks-in when you replace it. On Yamaha's, the valve guide locks in with the valve facing forward (or backward - but you won't be able to blow through it with the valve down). So pull it. Look to see if there's a number engraved on the top section of the valve, and if so... it faces the player. Once you slide it in, turn it side to side slightly. If it won't turn, the valve guide is in place. If it turns a little, you should eventually hear the valve guide snap into the groove and you won't be able to turn it. If the scraping sound continues, the spring may be bent and need to be replaced (easy do-it-yourself kits available on-line). As to the sound, my guess is that this is just a matter of adjusting to a MUCH smaller mouthpiece than you're used to using. Everyone sounds awful when they start. That said... You should also check to see that the spit-valve corks are there and sealing the tuning slide and third valve slide completely. They'll fall off sometimes, which creates a leak and thus an annoying buzz in the sound. It's a good student model trumpet, so congrats on the purchase, and enjoy!

Q:Can leakage of heart mitral valve be treated with homeopathic medicines?My grandmom has leakage in mitral valve. I am searching for options to other than surgery to make it less painful for her. She' is above 80yrs of age. If you know of any good options for treatment , please let me know as we also consult the doctors. thank u :): I would make sure she goes to a good cardiologist and that he/she explains to you what the cause of the mitral valve regurgitation is, how severe it is, whether the left ventricular size and function are affected, and what the treatment options are. Unfortunately, there are no homeopathic therapies that are known to be effective. However, mitral regurgitation is well-tolerated for a long time, and your grandmother may only need to be followed clinically if the regurgitation is not severe and if she is asymptomatic. If the regurgitation is severe and if she's symptomatic or if the left ventricle has become enlarged or weakened, surgery is the best way to go as long as she is thought to be healthy enough otherwise to tolerate it. With all due respect, I don't take that magnesium deficiency argument seriously. A single paper from a group in Poland does not constitute significant scientific evidence. The fact that it was published in the journal Magnesium Research should suggest the value of the study. I suspect that's the only journal that was willing to review and accept the manuscript. Additionally, the paper addresses a very specific form of mitral valve disease called prolapse, which is not necessarily the problem with your grandmother. On top of that, the criteria the authors used for MVP are not well defined (a major problem with that diagnosis) and the methodology is otherwise questionable.

Q:I think on old AC units They had a different valve than the shrader. It might be called a king? Anyway, I can't get my gauge to read the pressure. The needles don't move at all. How can I measure, refill this type of HVAC?: no offense,but i'm a little concerned that you have gauges and the knowhow to check freon,but dont know about different types of service / access valves.apply any advice at your own risk......anyway,,if you remove the large cap that covers the stem of the service valve you need to [ with gauges already connected] turn the stem clockwise to open it so your gauge can read the pressure,[ they make a special service valve wrench for this purpose,an adjustable wrench usually will work,but be careful not to strip the square end of the stem if its old and doesnt want to turn],,only turn the stem one or two times around,,DO NOT keep turning it clockwise until it stops or you will close the valve off....when finished checking with gauges,be sure to turn stem counterclockwise until it stops turning,,then you can safely remove gauges..if you remove gauges without turning stem counterclockwise,the the freon will blow out of the valve when gauges are removed,,not a pleasant experience,, be sure to where gloves and goggles,esp if you arent used to doing this......dan

Q:I'm in the process of replacing my dishwasher but I have a problem. I followed the water line from the dishwasher to under my sink and found a red valve that was completely straight, so I turned it to the right as tight as it would go and tried removing the hex nut connecting the line to the dishwasher. Maybe i'm wrong, but there is a lot of water coming out of the line and I don't think it's supposed to. I easily filled up a bowl you would use to mix cakes and it was still going! So, I turned the valve back to straight across thinking maybe someone else turned it off (my dad), and tried it again but the same thing? What am I doing wrong and what should I do to solve this?: Sometimes the valves under the sink can't completely stop the water flow or they,ll stop the flow only to leak once they are opened up again after the repair. The way around this is to turn off the water to the house. You can do this by locating the water inlet valve usually located in front where your garden hose is toward the bottom you'll see a valve close it off to stop the water. Once you have done this turn on the kitchen faucet and the bathroom faucet to help drain the system and to insure you have shut off the water, replace the dish washer then slowly turn back on the water to remove any air in the lines then close the faucets.

Q:I accidentally pushed the pressure release valve on my hot water heater last night. It ran for a while, and did not stop. I turned the water off, the valve on the cold water piper above the water heater, and it stopped running. Will this stop running at some point? The overflow tray fills too quickly for me to drain it. When I turn the water back on it starts pouring out again. HELP!!!: After long periods of inactivity, mineral deposits will form on the pressure side of the valve. When you pushed the valve some of the deposits likely lodged in the valve preventing it from closing all of the way. The good news is that you need not replace your water heater. The bad news is you will likely need a new valve. It is important to replace the valve in these situations because the same mineral deposits that prevent it from closing now can also prevent it from opening when it is needed to relieve excess pressure.

Q:Because I plan to remove mine on a 2000 Eclipse GT.Thank you all..: There's only 2 reasons to remove a rocker arm. 1) You need to clean the lash adjusters or replace them. 2) You need to change the valve stem seals. The only problem you are going to have is when all the lash adjusters that are located on the valve stem side of the rocker arms, fall out. You need a special set of spring clips to re-install them or even take them out, they may drop down one of the oil return holes. Then you're screwed!

Q:I was woundering if anyone had a repair manual for this valve on a 2004 Nissan Maxima. I just bought the car and Im getting the P1800 Code. Any help would be appreciated!: The sensor is very expensive. It cost 199.00 from the dealer

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