Small flow control valve purchase tips

In addition to general industrial process control, there are many applications in laboratories and pilot plants where minimal flow needs to be controlled. With this small flow rate, the full open flow rate is less than that of a typical valve. Therefore, Machining, general process is not guaranteed, the only way to solve the problem is to calibrate the flow characteristics of each valve experiment to the final calibration, specific, real flow to illustrate. Structural Forms There are basically two ways to address low flow control problems: (1) Special trim parts are used in standard bodies. This method can usually do Kv = 0.03 or so. (2) The use of special trim parts in standard bodies offers good economy and scalability as this will reduce the need for spare parts for special valve bodies and actuators, as well as facilitate future flow expansion ( Only need to replace the standard valve body parts).

Mutifunction Drilling Machine

Mainly used for drilling water wells, monitoring wells, geothermal air condition ing hole construction, national defense projects,anti-floating anchor rod,cable anchor rod,high-pressure Rotary Jet Drilling Operations;At the same time, it is suitable for large diameter vertical hole construction in geotechnical engineer- ing such as hydropower station,railway,highway and city foundation, grouting reinforcement hole, small foundation pile holemicro-pile etc..
Construction Features:
→The power head of drilling rig can change speed both mechanically and hydraulically. Suitable for down-hole Hammer,eel pipe, full casing and alloy rotary drilling methods.
→Two large cylinders on the mast, lifting force up to 25 tons, eccentric with pipe drilling can be used to pull out casing,but also for small-scale non-excavation construction.
→The rig uses inside and outside telescopic mast power head travel up to 7 meters, can drill 23 meters drill pipe at a time, reduce a time to add drill pipe, improve efficiency twice.

Mutifunction Drilling Machine,Multi Purpose Drilling Rig,Multi Function Drilling Machine,Multipurpose Drilling Rig

JIANGSU XI TEC ENVIRONMENTAL&DRILLING EQUIPMENT COMPANY CO.LTD , https://www.xitecdrilling.com

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