The features of a knife gate valve for some corrosive environment
- May 31, 2019
- Hits: 31
A knife gate valve is a component that utilizes a blade to cut through clogging of heavy liquids. These valves were designed to work in some of the most corrosive, erosive and abrasive environment in...
How to Choose a Slab Gate Valve
- May 27, 2019
- Hits: 59
The slab gate valve is a slide valve whose closing member is a parallel gate or wedge. Generally speaking, we have single disc & double disc slab gate valves, slab gate valves with &...
What is a triple eccentric butterfly valve?
- May 24, 2019
- Hits: 699
The traditional hard seal butterfly valve sealing performance is not guaranteed, and the leakage amount is large. In order to change this situation, the hard seal butterfly valve has been through many...
What is an Eccentric Plug Valve
- May 20, 2019
- Hits: 58
Today we will introduce eccentric plug valves which are seldom provided by other factories. First, I would like to show you a photo of this kind of valve. You must wonder what its features are....
How to Choose Check Valves
- May 16, 2019
- Hits: 48
A check valve refers to a valve that automatically opens and closes by the flow of the medium, which is used to prevent the medium from flowing backward, and prevent the pump and drive motor from reversing....
Another Batch of Dervos Ball Valves Will Be Sent
- May 13, 2019
- Hits: 41
It is a pleasure to announce that another batch of our ball valves will be sent to customers very soon to play their role in the pipeline, and also to showcase our Dervos style in the oil field. After...
A Further Introduction to Bellow Seal Valves
- May 09, 2019
- Hits: 49
In the previous article, we briefly introduced bellow seal valves. Today, we will discuss further on bellow seal valves. A bellow seal is connected to the valve stem and the valve bonnet. When the valve...
A Brief Introduction of Bellow Seal Valve
- May 06, 2019
- Hits: 46
Bellow seal valves are the valves with stem packing of below seal instead of gland packing as we often know. Why do we use bellow seal valve even if the price is comparatively higher? As we all know,...
Five Common Methods for Preventing Nut From Loosening
- Apr 30, 2019
- Hits: 366
Nuts, spring washers, stop washers, and split pins are generally used on valves to prevent loosening. The following are 5 common methods for preventing nut from loosening. 1. Double nut locking...
How to Judge the Valve Internal Leakage?
- Apr 29, 2019
- Hits: 57
Step 1: Calculating energy consumption -- Comparing the daily energy consumption, if the yield is reduced with the same raw material, then we judge initially that the gate valve leaks,...