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Branch pipe pressure reducing valve QPYZ11-16T
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Branch pipe pressure reducing valve QPYZ11-16T
Summary information
The branch pipe pressure reducing valve produced by our factory is mainly used in various building water supply systems, fire protection systems, central a
Affiliate classification
Regulating valve series
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Description
1, branch pipe pressure reducing valve use
The branch pipe pressure reducing valve produced by our factory is mainly used in various building water supply systems, fire protection systems, central air conditioning systems, heating systems, etc. It is used for branch pipe decompression, which can make the water supply pressure distribution more balanced, avoid partial water supply overpressure, and optimize the water supply partition of high-rise buildings. It can replace the zone-controlled variable frequency water pump, and can replace the zoned water pump in the fire water supply system for the household water supply system, which can protect all the faucets and other water appliances.
2, branch pipe pressure relief valve features
With a direct acting diaphragm structure, the internal structure is very simple, no jamming, reliable performance and durability.
It is resistant to dirt and scale, does not require a filter, does not require a bypass pipe, and the piping is extremely simple, saving a lot of space and piping costs.
The outlet pressure is precisely adjustable. Under normal circumstances, the outlet pressure can be considered to be unaffected by the inlet pressure (the change in outlet pressure is 8% of ΔP1).
Excellent hydraulic characteristics, low pressure loss, and a pressure reduction ratio of 10:1 or more.
It can meet a variety of decompression requirements, especially for branch pipe decompression systems.
3, the working principle of the branch pipe pressure reducing valve
The outlet pressure acts on the bottom surface of the diaphragm and the underside of the valve flap. When it exceeds the spring setting, the spring is compressed to close the flap. As long as there is no downstream flow, the outlet pressure will remain at the set value (the amount of change is only 8% of the inlet pressure change); when the downstream water is used, the outlet pressure drops, the spring pushes open the diaphragm, and opens the pressure reducing valve. After the water flow is continuously circulated for a while, the opening of the pressure reducing valve produces a self-damping effect, which makes the opening and closing action tend to be stable.
4, the main technical parameters of the branch pipe pressure reducing valve
Frost damage, should pay attention to heat preservation in cold areas.
The direction of the water flow is wrong, the pressure reducing valve becomes a check valve, and the outlet pressure is zero.
The spring is too tight to close and the pressure relief valve will pass through P2=P1.
The bypass pipe leaks, so that P2 deviates from the set value. In view of the superior reliability and durability of the pressure reducing valve, it is recommended not to install the brightness pipe.
|
Types of |
model |
Nominal pressure
PN (MPa)
|
Nominal diameter
DN (MPa)
|
Connection Type |
Body material |
Export pressure (MPa) |
Working °C
|
|
Branch pipe pressure reducing valve |
YZ11X-16T |
1.6，2.5 |
15~50 |
internal thread |
Qinggang |
0.05~0.6（Adjustable） |
80 |
|
YZ11X-16P |
stainless steel |
5, the main size of the branch pipe pressure reducing valve
|
Nominal diameter DN (MPa) |
Size (MM) |
Weight (Kg) |
||||
|
MM |
in |
A |
B |
C |
φG |
|
|
15 |
1/2 |
31 |
60 |
76.5 |
59 |
1.2 |
|
20 |
3/4 |
31 |
75 |
76.5 |
73 |
1.2 |
|
25 |
1 |
36 |
88 |
85 |
81 |
1.4 |
|
32 |
11/4 |
42 |
93 |
98 |
81 |
1.5 |
|
40 |
11/2 |
45 |
98 |
102 |
85 |
2 |
|
50 |
2 |
54 |
130 |
117 |
98 |
2.65 |
6. Possible causes of failure of the branch pipe pressure reducing valve
Frost damage, should pay attention to heat preservation in cold areas.
The direction of the water flow is wrong, the pressure reducing valve becomes a check valve, and the outlet pressure is zero.
The spring is too tight to close and the pressure relief valve will pass through P2=P1.
The bypass pipe leaks, so that P2 deviates from the set value. In view of the superior reliability and durability of the pressure reducing valve, it is recommended not to install the brightness pipe.
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