Ductile Iron Double Air Valve With gate valve

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1.Design standard:BS4504,JKR,AWWA
2.DN15-DN250
3.PN10/16/25
4.Test standard:BS6755
5.Cost effective

Technical Data

DN50-DN250

General Design: BS/AWWA

Test Standard:BS6755

Flange:BS4504

Work temperature: NBR≤80°C

EPDM≤120°C

Material of Main Parts:

Body: Ductile Iron

Seat of Body: Gunmetal

Ball: ABS/SS304/SS316

Seat of Disc: NBR/EPDM

Disc: Ductile Iron

Air Release Nuts: Brass

Bolt & Nut: Carbon Steel

Spindle: Stainless Steel

Spindle Nut: Brass

Q: of diameter 60cm with water at a rate of 2 L/min. Find the rate at which the water is rising in the basin when it is HALF full. [Use the following facts: 1 L is 1000 cm3. V = pi (rh^2 -1/3 h^3]I need help with this asap. Thank you!!: Equation of the hemispherical surface x? + y? + z? = R?, (-R z 0) The volume of water in the basin with the height h: . . . (-R+h) V = ∫ π(x? + y?) dz . . . -R . . . (h-R) V = π ∫ (R? + z?) dz . . . -R V = πR?[(h - R) - (-R)] + (π/3)[(h - R)? - (-R)?] V = πR?h + (π/3)(h? - 3h?R + 3hR? - R? + R?) V = πR?h + (π/3)(h? - 3h?R + 3hR?) dV/dh = πR? + (π/3)(3h? - 6hR + 3R?) dV/dh = πR? + π(h? - 2Rh + R?) dV/dh = π(h? - 2Rh + 2R?) dV/dh = (dV/dt)/(dh/dt) dh/dt = (dV/dt)/(dV/dh) dh/dt = (dV/dt)/π(h? - 2Rh + 2R?) There is an ambiguity when you say HALF full. It can be interpreted as the water was filled up to half its maximum height (R) or filled up to half the volume of the basin (2πR?/3) I will take the case in which the water was filled up to half its maximum height: h = R/2 dh/dt = (dV/dt)/π(R?/4 - 2R*R/2 + 2R?) dh/dt = (dV/dt)/π(R?/4 - R? + 2R?) dh/dt = 4(dV/dt)/5πR? Plugging in dV/dt = 2000 cm?/min R = 30 cm dh/dt = 4*2000/4500π dh/dt = 16/9π cm/min. dh/dt ≈ 0.57 cm/min.

Q: How to repair the kitchen faucet at the leak? How can we remove it? Red arrows: The water off the water should be removed inside the useless change.

Q: This faucet bubble device which direction twist can be removed if it is clockwise counterclockwise Please specify from the top down or from the bottom up: Dizzy, and this outlet should also say clearly from top to bottom ah? The Do you stand inside the faucet? In the following is not, then you reach out to pinch the mouth of the mouth when it is from the top down or say from the bottom of it? I can only tell you the right hand stretched into the mouth of the mouth to twist off the counterclockwise, which, whether from the top down or from the bottom up in fact are counterclockwise rotation twist, see you this is not a good goods, Is the plastic hand can not screw down the words may be troublesome, the mouth of the mouth there is a slotted wrench inserted into the hope that can be screwed down is also anti-clockwise twist (if the wrench is not just inserted do not go to twist) Pay attention to the intensity slowly to the other impatient, if the plastic mesh mouth twist bad people do not understand it may be a trouble, if the use of bayonet Huopu Binghuang Hongguang Ge pupil wrench wrench inserted also do not move the proposal You go online to buy a net mouth to switch the socket wrench is just the kind of plastic buckle into the price of about 1-2 yuan it does not count the freight, the kind of the most appropriate demolition, even if the screw does not twist bad mouth The

Q: Home with a gas water heater: Kitchen faucet with a single handle single control, generally only cold water single water. Single handle double control, hot water, cold water and 紶碃 official pull down regulatory right sea protection hot and cold mixed water control function. There is also a double handle dual control, the same function and single handle double control

Q: Balcony wash basin basin faucet high: This is based on the style of your choice of faucet and basin style to decide.

Q: Taiwan basin with a single hole is good or three holes of the good, what are the advantages and disadvantages: From the operation, single-hole basin mixer, adjust the water temperature, the flow is more convenient, a handle can be adjusted. The adjustment of the three holes will be more trouble, to twist the two handles several times before it can be transferred to the appropriate temperature.

Q: Because the water heater is not easy to use, for a new one. But since the day of the change, the kitchen faucet flow becomes very small, cooking dish is very no way to spend a lot of flowers, While the bathroom wash basin water flow is larger than before. I asked the water heater manufacturers customer service, engineers, maintenance personnel, said can not explain, and water heater should be no matter. However, this change, really is the day from the beginning of the water heater? What is the reason for that? More: The problem is very simple, and the water heater does not matter, if your home water pressure is low, the water heater will become smaller, but you said the kitchen becomes smaller and the toilet water flow than before, then only one reason, through To your house the kitchen of the pipeline is blocked, or your home kitchen faucet dirty block, according to my years of experience in home appliance repair point of view is the number of your home water heater hot water outlet pipe diaper round mouth too small lead to water Poor. For these reasons you can find a professional plumber, should be easy to solve. The above answer hope to help you.

Q: Is there any kind of faucet that does not splash water?: Yes, with splash net

Q: Table basin basin distance from the basin: Accurate to say, look at the size of your disc and faucet, the normal is the leading water after the water to open the water out of the water hole just right

Q: i try to fix it myself.i can't seem to unscrew that white plastic ring, it was really tight. so what should i do now? should i hire a professional?: did u try using pair of large pliers? are u puttin in new one? where wuz leakin at..at hose or drippin..did u check gasket on both ends? no.u dont need to hire a professional. still cant get it off,,break it off or cut it..if putting new one in..new one comes with new plastic ring..are u sure u are turning it counterclockwise? big pair of channel locks seem to work the best.if that dont work..take a screwdriver and break it outta there.lots of luck

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