Regulating valve test methods

Regulating valve is very common in industrial production and particularly important control device, it is working properly or not directly related to the production of the entire device is normal or not. Now, with the regulating valve technology advances, manufacturers and regulating valve is very diverse forms, functions are different, the following highlights various types of valve prior to installation and commissioning should pay attention to common problems. Regulating valve incoming inspection is a very important part to confirm the arrival of the control thermostat valve meets the design requirements. The technical requirements of each valve shall meet the design requirements, but the incoming inspection should focus on checking the following items in the content.
1. Body / Trim Specifications

This should include: valve type, valve type, nominal diameter, seat size, spool form, flow characteristics, leakage levels, body material, spool material, Seat Material, CV values, flange standard grade sizes and sealing surface forms, etc., if they find the same content and design of which shall be designed to identify discrepancies and recognition.

2.2 Actuator section

This should be checked mainly actuator model, type, function form, spring range, gas pressure.

2.3 locator section

The content of this inspection locator input signals, air pressure, electric and gas source interface size and explosion-proof rating, including explosion-proof rating of not less than the design level requirements.


2.4 Accessories

Carefully clean the control Oven Gas Valve is designed according to the technical requirements of the various accessories, such as filter regulator, limit switches, solenoid valves, hand wheel, special tools. Examine the contents of the above can be achieved by cleaning, measuring instruments, see the nameplate and a dedicated detection methods (such as flanges and bolts material can be identified by spectral analysis) and other methods to achieve.