Gate Valve of Double orifice from China on Sale

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China main port
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TT or LC
Min Order Qty:
1000 set
Supply Capability:
50000 set/month

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Product Description:

1. Structure of Gate Valve Description

1. Selected materials, in line with domestic and international standards, high overall quality of the material.
2. In line with the requirements of domestic and foreign advanced standards, reliable sealing, excellent performance, attractive appearance.
3. Sealing pair advanced and reasonable, gate and seat sealing surface with different hardness Stellite (Stellite) cobalt-based alloy cladding made, reliable sealing, high hardness, wear resistance, high temperature, corrosion good anti-abrasion performance, long life.
4. Stem quenched and nitride surface treatment, has good corrosion resistance, scratch resistance and abrasion resistance.
5. The use of flexible wedge gate structure, medium and large caliber set thrust bearings, friction force is small, and with a striking manually open and close with ease.

2. Main Features of the Gate Valve:
1)Full port design
2)OS&Y Outside screw and yoke .
3)BB. Bolted Bonnet .
4)Flexible wedge, Fully guided
5)Choice of solid or split wedge .
6)Renewable seat rings
7)Forged T-head stem
8)Rising stem and non-rising handwheel 

3. Images of the Gate Valve


4. Specification of the Gate valve 



3.Pressure: Class150~2500

4.Design and Manufacture:API602,BS5352,ANSI B16.34

5.Connection Ends:

  1)Socket Welded Dimension:ANSI B16.11,JB/T1751

  2)Screw Ends Dimension:ANSI B1.20,JB/T7306

  3)Butt Welded:ANSI B16.25

  4)Flanged Ends:ANSI B16.5,JB79

6.Test and Inspection:API598,GB/T13927,JB/T9092

7.Structure Features:

   B.B(Bolted Bonnet) and OS&Y(Outside Screw and Yoke)

   W.B(Welded Bonnet) and  OS&Y(Outside Screw and Yoke)


1. Can I get free samples?

A: Yes,we can provide you the free sample, but you need to bear their own delivery costs.

2. Can I request to change the form of packaging and transportation?

A:Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.

3. Can I request to advance the shipment?

A: It should be depends on whether there is sufficient inventory in our warehouse.

4. Can I have my own Logo on the product?

A: Yes, you can send us your drawing and we can make your logo, but you have to bear

their own the cost.

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Q:Function of reed valves?
GuardrailJim and Badobses---, you both got it almost right. You other guys, take a lesson. First, Jim Bad should have said fuel is pulled into the crankcase, through the reed valves. The crankcase is a small sealed off area on a two stroke, just larger than the flywheels. Old days, the piston skirt was used for a valve, opened when the piston was on the way up, closed on the way down. Both systems use the piston skirt to open and close the exhaust port, which opens when the piston is on the way down on the power stroke, normally about half way, give or take a bit. Intake, into the combustion chamber starts when the transfer ports open, which is a bit after the exhaust port opens, and closes just a bit after the exhaust closes. With the reed valve, mixture is pulled into the crankcase at any time the case pressure goes below atmospheric. Also stops, by the reed valve, as soon as pressure goes over atmospheric. This lets the engine induce a fair amount more mixture than was possible with a piston port, and no blow back of mixture through the carb. This is a simplification of a very complicated piece of air flow. One will know chap I know, who also built some of the best, if not the best 2 stroke exhaust went back to college, got a Doctrate on accoustics before starting design of his expansion chamber systems, and THEY WORKED! Sorry, I did not mention disk valve engines the first time, in effect kin to the piston port, except they are timed for opening and closing to be at proper time to get maximum flow into the crankcase. Less blow back than with a piston port. Between piston port and reed in power, all else equal. Reed valves are all-round best. Cheers, Tomcotexas.
Q:Plastic ball valve help!?
=== take it back and get another valve .... if it doesn't work freely in your hand then the valve will be a problem if you install it ---- working with pvc you should use the purple glue that is waterproof and it is a good seal and no leaks when you have
Q:I can't fit my bike pump on to one of my presta valves.?
to apply the adapter, you need to first unscrew the presta valve, then placed the adapter on and pump up the tire, then take the adapter off and tighten the presta valve to close it. I consider the different answer that that's recommended to replace the tubes so as that the presta valve does not come aside. New tubes are inexpensive - approximately $6 or so. you need to purchase a spare, too, merely in case you flat. in case you do no longer understand the thank you to alter the tubes, your community motorbike save can do this for you and clarify the technique so as which you're able to do it your self interior the destiny and sell you the tire levers (and patch kit in case you want) you will ought to do it. reliable success!
Q:Leaky main water shut off valve?
There is a very simple fix to your problem. Get some teflon tape, turn off the valve, back off the packing nut all the way, twirl the tape into a thread (about 4 to 5), wrap it around the stem, reinstall the nut and snug it up. Done! While there is special graphite packing for this purpose, it is usually hard to find and works no better than the tape. You can apply a small amount of vasaline to the stem before you put on the tape to make the valve operate more easily. Only tighten the nut enough to keep it from dripping or it may become hard to open and close. You can easily add a second valve by removing the pipe above the old one and installing a piece of copper with a valve inline. Some will say you need to worry about electrolysis if you screw an adapter into the existing galvanized but I am sure you will replace the old pipe before that is an issue 20 years from now. Good Luck!
Q:2002 Chevy Malibu EGR Valve?
Cleaning it could make it worse then your experiencing now, but if you want to here's the steps. There are two bolts holding the EGR val;ve down. Remove them, and use a can of carb cleaner to clean the carbon out of the two ports that are in the valve. Reinstall with a new gasket and run the car. If the check engine light comes on replace it. I recently got a EGR valve (not recommended but they work) from a local wrecking yard for my folks '99 Venture 3.4 ltr motor, replaced the one on the van because it was throwing the EGR code and it worked fine. No more check engine light.
Q:Defects in which valves would produce the following?
Tricuspid regurgitation: Symptoms of right-sided heart failure, such as ascites, hepatomegaly, edema and jugular venous distension.
Q:Valve Replacement Surgery?! ?
Valve replacements actually have very low morality rates like 1-2%. There are always risk's with surgery though, such as blood clots or irregular heart rate. The recovery in the hospital is generally 5-7 days, and then it can take anywhere from 8 weeks to a year to feel recovered.
Q:what r the best heart valves?
Depending on the valve, the original valve may be able to be repaired. This procedure has only been widely used 8-10 years probably. Originally it was believed that these like animal (pig or cow) would probably only last around 10 years but it is constantly being adapted so longer may be possible. Animal valves do not require blood thinners, although many people I know have ended up on thinners because of other problems. The other advantage is that they are quiet. Mechanical valves, often called metal aren't always truly metal. Older valves were thus a scan using an MRI was not possible. Mine was put in during 1995 and is called metal but does not cause any problem with an MRI and I know others from that time frame also with no problem. I expect it to last my whole lifetime and I never needed any anti-reject meds and few people I know have. I do tick like an old watch especially when I get winded or tired, but over the 13 years I've had it only one person outside of medical professionals examining me have ever noticed. It doesn't keep me awake but I do know some people who notice theirs, but the newer the quieter. I do have to take blood thinners, but for me and most of those I know don't have major problems maintaining a therapeutic level. You have to have a blood test routinely to know but they now have a finger prick machine so it is quick and easy. I only know of one person whose body rejected valves and had to have it removed and animal placed in. From those I know usually children they will do tissue just because a child won't be as careful and watchful of bleeding. Otherwise it is choice based on years wanted from the valve and lifestyle if meds fit and eating habits.
Q:Would a ERG valve cause sputtering or hesitating on my pontiac firebird?
If the EGR valve is opening on Acceleration yes this would cause hesitation,but you have to find out why it is opening if it is.If there is a solenoid controlling the EGR valve this might be the problem.If you can put your finger under the EGR valve when the engine is idling,rev then engine up in park,if you feel the valve opening it is most likly the solenoid
Q:Using a valve spring compressor?
save yourself the hassle and throw that thing away go back to your local auto parts store and buy the l shaped spring compresser should be about twenty dollars make sure vehicle is at tdc remove rocker arm bolt remove rocker arms going valve by valve do not mix them up must go in exactly the same order they came out now lightly tap the top of valve with a rubber mallet will help loosen retainers place compresser on rocker arm stud take r.a. nut and tighten till valve locks fall out or can be removed very small dont lose use compressed air to hold valves in place at tdc sorry that should have been first not hard but not easy to do rebuilt 350 motor from the guts out spent alot of money on spring compressers only to find out the simplest one worked the best the one like u got will give u hell i tried napas version craftsman all of them trust me use the L bar

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