是一种稳定后流量于设定值的自控阀门. 这种稳定不爱阀前供水系统流量及压力变化的影响.然而当阀前流量小于设定值时,主阀全开, 不会增加流量. YQ980011-16Q filter piston type flow valve is a kind of automatic control valve with stable flow after the set value. This kind of stability does not like the influence of the flow and pressure change of the water supply system before the valve. The main valve is fully open and does not increase flow.
工作原理： YQ980011-16Q filter piston flow valve works:
The pressure difference signal is transmitted to the pilot valve, the restrictor valve and the needle valve to perform two-way control control. The pressure of the upper chamber of the main valve piston is controlled. The throttle valve is adjusted by the restrictor pilot valve. There are throttling holes in the lower cavity of the piston to communicate with the downstream. The valve can be flushed to close. The pressure difference between the two ends of the main valve is the valve to open. The closed drive energy.
Mainly used in air conditioning, water supply and drainage, fire protection and various industrial and mining enterprises and other water supply pipe network ports need to filter and control the flow of places and conditions.
特点: YQ980011-16Q filter piston type flow valve features:
1.Pitot tube transmits pressure signal to the extremely sensitive flow-limiting pilot valve, without orifice orifice orifice throttling, no pressure loss, energy saving.
2.The flow-limiting pilot valve has a very sensitive spring to adjust the flow rate, and the operation is simple and accurate.
3.Y-shaped wide body valve cavity with small flow resistance and strong cavitation resistance.
The daily pressure of the medium is self-controlled, and no external drive source is required.
5.A filter is installed between the inlet flange of the main valve body and the valve seat, saving investment costs and installation costs.
6.The inner and outer surfaces are sprayed with environmental protection coating to ensure the anti-erosion and safety of the product.
If used in sea water, please specify when ordering.
1. Pitot tube 2. Ball valve 3. Filter 4. Main valve 5. Needle valve 6. Openness indicator 7. Pilot valve 8. Ball valve
Main technical parameters and main part materials:
| Nominal pressure PN (MPa) || 1.6 || 2.5 |
| Nominal diameter DN (mm)
|| 40 50 65 80 100 150 200 250 300 |
| Strength test pressure: (MPa) || 2.40 || 3.75 |
| Sealing test pressure: (MPa) || 1.76 || 2.75 |
| Flow adjustment range |
05 ～ 5m / S
| proper temperature || 0 to 100 ℃ |
| Ambient temperature || -30 to 350 ° C |
| Applicable medium || water |