Non Return Stop Valve

PPR brass stop valve with lift type on sales Comply with  Food Hygiene Regulations and Non-toxic
PPR stop valve with brass from Top chinese factory
PPR stop valve with brass from Top chinese factory
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Min Order Qty: 2400 pc
Supply Capability: 230000 pc/month
High    Quality   Heavy    stop    valve.
High Quality Heavy stop valve.
Ref Price: $10.27 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
High    Quality   Heavy     stop     valve
High Quality Heavy stop valve
Ref Price: $10.27 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
High    Quality  Concealed   stop   valve
High Quality Concealed stop valve
Ref Price: $14.14 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
High  Quality  Y  type  stop  valve-female
High Quality Y type stop valve-female
Ref Price: $9.99 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
High  Quality  Y  type  stop  valve-male
High Quality Y type stop valve-male
Ref Price: $9.99 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
Water return Value and water distributer  For Floor Heating  System
Water return Value and water distributer For Floor Heating System
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Min Order Qty: 1 pc
Supply Capability: 50000 pc/month
PPR Single Female Threaded Concealed Stop Valve
PPR Single Female Threaded Concealed Stop Valve
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
PP-R  double  fenale  threaded  stop  valve
PP-R double fenale threaded stop valve
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
PPR elbow stop valve with temperature control
PPR elbow stop valve with temperature control
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
Polypropylene-Random PPR stop valve with straight
Polypropylene-Random PPR stop valve with straight
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
PP-R double fenale threaded stop valve
PP-R double fenale threaded stop valve
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
PP-R single female  threaded  stop valve
PP-R single female threaded stop valve
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
PPR single  female  threaded  concealed  stop  valve
PPR single female threaded concealed stop valve
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
PP-R double  fenale  threaded stop valve
PP-R double fenale threaded stop valve
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
Air vent grill  Basedboard Return Air Grille
Air vent grill Basedboard Return Air Grille
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Min Order Qty: 1000 PCS
Supply Capability: 100000 PCS/month
YD-PL350C Non-stop Toilet Roll Rewinding Line
YD-PL350C Non-stop Toilet Roll Rewinding Line
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Min Order Qty: -
Supply Capability: -
Fiber Cement Board Cement board, Fireproof Non-asbestos
Fiber Cement Board Cement board, Fireproof Non-asbestos
Ref Price: $1.50 - 3.00 / m²
Min Order Qty: 10000 m²
Supply Capability: 300000 m²/month
Fiber Cement Board Cement board,   Fireproof Non-asbestos
Fiber Cement Board Cement board, Fireproof Non-asbestos
Ref Price: $1.50 - 3.00 / m²
Min Order Qty: 10000 m²
Supply Capability: 300000 m²/month
Beauty   appearance of PP-R double fenale threaded stop valve
Beauty appearance of PP-R double fenale threaded stop valve
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
Fireproof Calcium Silicate Board  Non-asbestos
Fireproof Calcium Silicate Board Non-asbestos
Ref Price: $1.20 - 2.50 / m²
Min Order Qty: 10000 m²
Supply Capability: 300000 m²/month
PP-R Single Female Threaded Stop Valve  with Superior Material
PP-R Single Female Threaded Stop Valve with Superior Material
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
YD-PL400 Non-stop Toilet Roll Rewinding Line
YD-PL400 Non-stop Toilet Roll Rewinding Line
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Min Order Qty: -
Supply Capability: -
High  Quality  PP-R single female threaded stop valve
High Quality PP-R single female threaded stop valve
Ref Price: $12.10 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
PP-R  Heavy  stop  valve  with SPT Brand
PP-R Heavy stop valve with SPT Brand
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
Stop Valve with Superior Quality Made in China
Stop Valve with Superior Quality Made in China
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Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
High Quality  PP-R double fenale threaded stop valve
High Quality PP-R double fenale threaded stop valve
Ref Price: $13.63 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
PPR elbow stop valve with temperature control automatically
PPR elbow stop valve with temperature control automatically
Ref Price: Get Latest Price
Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
High Quality PP-R elbow stop valve with temperature control  by hand
High Quality PP-R elbow stop valve with temperature control by hand
Ref Price: $18.42 / watt
Min Order Qty: 1000 watt
Supply Capability: 100000 watt/month
GATE VALVE AWWA/ ANSI NON-RISING STEM RESILIENT SEATED DUCTILE IRON
GATE VALVE AWWA/ ANSI NON-RISING STEM RESILIENT SEATED DUCTILE IRON
Ref Price: $10.00 - 100.00 / pc
Min Order Qty: 1 pc
Supply Capability: 9999 pc/month
PP-R Double Fenale Threaded Stop Valve From China
PP-R Double Fenale Threaded Stop Valve From China
Ref Price: Get Latest Price
Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
Non Rising Stem Grooved Gate Valve
Non Rising Stem Grooved Gate Valve
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Min Order Qty: 10 Sets set
Supply Capability: 10000 Sets Per Month Gate Valves set/month
Y  type stop valve-female with SPT  Brand
Y type stop valve-female with SPT Brand
Ref Price: Get Latest Price
Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
PP-R elbow stop valve with temperature control  by hand
PP-R elbow stop valve with temperature control by hand
Ref Price: Get Latest Price
Min Order Qty: 1000 pc
Supply Capability: 100000 pc/month
GATE VALVE NON-RISING STEM METAL SEATED DUCTILE IRON JIS
GATE VALVE NON-RISING STEM METAL SEATED DUCTILE IRON JIS
Ref Price: $10.00 - 100.00 / pc
Min Order Qty: 1 pc
Supply Capability: 9999 pc/month

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FAQ

Automatic exhaust valve installed in the pipe before and after the installation of other valves need to press it?
In general, the exhaust valve (large diameter) and a maintenance valve, normally open,s
Standard and specification for pressure test of valves
(11) when the valve with drive device is tested and its tightness is tested, the sealing test shall be carried out by using the driving device to close the valve. For manual drive units, seal test shall also be done with the actuating closing valve.(12) the by-pass valve installed on the main valve after the strength test and the sealing test. The strength and tightness test of the main valve is carried out. The main valve should be opened when the closing member is opened.(13) iron valve strength test, the application of Pratia tapping valve and valve cover, check whether there is any leakage.(14) the valve test, in addition to the provisions of the plug valve to allow sealing surface oiling, other valves are not allowed in the sealing surface of the oil test.(15) when the valve pressure test, the blind plate on the valve pressure should not be too large, so as to avoid deformation of the valve, affecting the test results (cast iron valve if pressed too tight, will be damaged).(16) after the valve test pressure, should promptly remove the water and clean the valve, should also be prepared for the test record.s
What's the valve as a unit?
Business now there are many valve manufacturers, with the rapid expansion of SMEs, SMEs are more ~!s
What is the flow medium of the valve?
Just like the one in your bottle, then the medium in your bottle is waters
What are the general types of valves?
Valve is a control component in the fluid delivery system. It has the functions of closing, adjusting, guiding, preventing reverse flow, stabilizing voltage, shunting or overflow and releasing pressure.Function and use(1) cut off categories: such as gate valve, globe valve, plug valve, ball valve, butterfly valve, needle valve, diaphragm valve and so on. Cut off valve, also known as closed-circuit valve, stop valve, whose role is to connect or cut off the pipeline medium.Check valves, also known as check valves or non-return valves, check valves belong to an automatic valve, its role is to prevent the pipeline medium backflow, to prevent the pump and drive motor reversal, as well as the leakage of container media. Pump water off the bottom valve check valve also belongs to class.The function of the relief valve is to prevent the medium pressure in the pipeline or device from exceeding the required value so as to achieve the purpose of safety protection.Control valve, throttle valve and pressure reducing valve, its role is to regulate the media pressure, flow and other parameters.(2) vacuum type: such as vacuum ball valve, vacuum flapper valve, vacuum air charging valve, pneumatic vacuum valve, etc.. Its function is to change the direction of the air flow in the vacuum system, adjust the air flow rate, cut off or connect the vacuum system of the pipeline, and the component is called the vacuum valve.(3) special uses such as pigging valves, vent valves, drain valves, exhaust valves, filters, etc.. The exhaust valve is an essential auxiliary component in the pipeline system. It is widely used in boilers, air conditioners, petroleum, natural gas, water supply and drainage pipelines. Often installed in the commanding heights or elbows, etc., to exclude excess gas pipeline, pipe road to improve the use of efficiency and reduce energy consumption.s
How to open the gas valve?
Are you talking about using air? Or your valve is a pneumatic emergency shut-off valves
High and low pressure valve is how to distinguish?
Vacuum valve - valve with operating pressure below standard atmospheric pressure.Low pressure valve - nominal pressure PN is less than 1.6MPa valve.Medium pressure valve - nominal pressure PN 2.5~6.4MPa valve.High pressure valve - nominal pressure PN10.0~80.0MPa valve.Ultra high pressure valve - nominal pressure PN greater than 100MPa valve.s
What should be checked before using the valve?
5, check valve disc or spool movement is flexible and accurate, no bias, displacement or skew phenomenon6, spring-loaded safety valve should be sealed, positioning lever type safety valve should have the weight of the device7, rubber lining, lining enamel and plastic lined valve body surface should be smooth, the lining layer and the substrate firmly, no crack, blister defects, using high frequency electric spark generator to inspect the lining surface, not found in liner breakdown (white flash phenomenon) is qualified8, the valve flange sealing surface should meet the requirements, and shall not have radial scratchess

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