With more than 30 years of casting history, Wenzhou Longzhu Industrial Co., Ltd. has a large number of experienced casting engineers and technicians. We can produce castings of various sizes, shapes and materials according to the drawings provided by customers, especially in the field of valve castings. Cooperate with Fortune 500 companies for many years. |
size: | 2”-72” |
pressure: | ≤7500psi |
Material selection: | GS-C251.0619,WCB.WCC,LCB,LCC,LC3,4C,4D,WC6,C5,C12, C12A,CA15，CF3,CF8(-196’C),CF3M,CF8M,CF8C,CD4MCu,CK3MC uN,ZG200-400,ZG230-450,ZG270-500,2G40Cr1,ZG20CrM0.2G15C r1Mo1V,ZG35Cr1MO.ZG16CrMOG(1Cr5Mo),ZG1Cr13,ZGOCr18Ni9 Ti.5A.KmTB Cr26.4A |
weight: | ≤3Ton |
process: | Resin sand casting, etc. |
Wenzhou Longzhu Industrial Co.，Ltd Sales manager： Mrs.peng E-mail: sylvia@china-longzhu.com Tel： 0086-0577-86621768 Fax： 0086-0577-86621935 Address ： No.19 Longyong Road.Xiongxin Village. Longwan,Wenzhou,Zhejiang,China |
First, the common safety valves generally have the following types:
1. According to the overall structure and the loading structure, it can be divided into three types: heavy hammer lever type safety valve, spring type safety valve and control type.
2. According to the ratio of the valve opening height to the valve circulation diameter, it can be divided into a micro-open type and a full-open type safety valve.
3. According to the way of safety valve gas discharge, it can be divided into three types: fully enclosed, semi-closed and open.
Second, the selection of a suitable safety valve should be considered from the following aspects:
1. The structural form depends mainly on the process conditions of the equipment as well as the working medium and characteristics. Generally, the spring type safety valve is often used when the amount of boiler and pressure vessel is not large. Otherwise, it is better to select the full-open safety valve.
2. If the medium is toxic, flammable and explosive, the closed safety valve should be selected.
3. Each safety valve has its own working pressure range. When selecting, it should be selected according to actual needs.
Our Services
We have a professional team of international trade, we can provide you the professional advice of the purchase of our products and the most economical and appropriate Packaging and Transport program, before loading, we will strictly check the quality for the customers, and then, we provide continuous after-sales service.
If you need the Non- standard products ,according to your drawings, we can produce the product, that you most satisfied.
