DURLMARK – BLOG

Sealing Treatment on Flange Leakage

By Durlmark Industrial | Jun 20,2017

How to deal with the leak problem of flanges? Here we’d show you the sealing treatment method by case analysis.

11 Technical Features of Fully Welded Ball Valve

By Durlmark Industrial | Jun 20,2017

Here are eleven major technical characteristics of fully welded ball valve if you want to know more about fully welded ball valve. 1. The body structure of fully welded ball valve is welded. Therefore, there is no external leakage phenomenon happening.

Processing Methods of Seamless Pipe Reducers

By Durlmark Industrial | Jun 19,2017

A stainless steel pipe reducer (with a larger and a smaller head) is applied to pipeline where size diameter needs changing. Forming process methods used for reducers commonly contains necking pressing, expanding pressing or a combine of these methods.

Common Types of Pipeline Flange Faces

By Durlmark Industrial | Jun 19,2017

Flanges provide the necessary connections to link pipelines. Faces are the mating surface of a flange. Flange faces have to be smooth enough to ensure a tight, leak-free seal for bolted flanges.

Anti-Corrosion Galvanized Steel Pipe Abstract

By Durlmark Industrial | Jun 19,2017

Galvanized steel Pipe is surface finished pipe that has been coated with a thin layer of zinc to help prevent corrosion. Zinc, a natural, healthy, and abundant element was first used in construction in 79 AD.

Reasons for Ball Valve Leakage during Construction Period

By Durlmark Industrial | Jun 14,2017

1. The main reason for this is the expensive maintenance fee, so the operating managers do not maintain ball valves. Or lacking of scientific management and preventive maintenance, the valve will have a failure in advance.

Notes for Pneumatic Butterfly Valve Installation

By Durlmark Industrial | Jun 14,2017

1. Before installation, check whether pneumatic butterfly valve has missing parts or not. Ensure that each part model is correct. And there are no other objects within valve and it is clog-free in solenoid valve and the muffler.

Six Common Faults and Elimination Method of Safety Valve

By Durlmark Industrial | Jun 14,2017

1. The disc of safety valve doesn’t return back after the discharge. This is mainly because of the bent stem or the disc is out of position, so you should assemble it again.

Main Installation Points of Spring Safety Valve

By Durlmark Industrial | Jun 14,2017

First of all, before installing safety valve, be sure to test the seal performance. If there is relief valve leakage or breakage of air cushion, it is needed to change immediately. Then, we can get the best use of it.

Solutions for Multi-Way Valves Failure

By Durlmark Industrial | Jun 14,2017

In China, multi-way valves are still in the process of research and development. So, compared with those valves which have been developed for a long period, multi-way valves will meet more troubles in normal use.