News: Company news; Exhibition news; Industry news

Hot Products: 1/2'' A182 F11 1500LB SW gate valve

WC6 High temperature high pressure seal BW gate valve

6'' 300LB CF8 RF end pneumatic control valve

1/2'' 800LB ASTM A182-F316 socket weld connection Y type strainer

Handle operated 2'' 150LB ASTM B148 UNS C95800 casting PTFE seat floating FF connection 2 pc ball valve

1 '' A105+Alloy 20 150 LB RF Flag Piston Valve

1/2'' ASTM A381 F2 150LB FF Flange piston check valve

Certifications

Contact Us: Cowinns Industry Equipment Co.,Ltd
No.127 Room No.748 Changjiang Road,High-Tech District,
Suzhou City, Jiangsu Province, zip:215128 China
Tel:+86 512 6878 1993
Fax:+86 512 6818 4193
Mob&what's app:+86 153 0620 9257
Email:info@cowinns.com
www.cowinns.com

Contact Now

News: Introduction to PID Diagram Knowledge of Valve Industry

Introductionto PID Diagram Knowledgeof Valve Industry PID diagram is thetechnical core of factory production. Whether it is an engineer from a designi...

The difference between DBB, DIB-1, DIB-2

Two types of seat sealing structures commonto trunnion mounted ball valves. 1. Double block and bleed valve A valve with two valve seat sealing pairsc...

Gaskets Are Not Created Equal

Gaskets are near the bottom of the food chain of valve components; trim, body materials and packing seem to get a lot more press. But gaskets serve an...

True Meaning of Double Block and Bleed

It’s time to do maintenance ona section of process. You don't want to shut down the entire facility, so youdecide to block off and depressurize just ...

The operation method of replacing the flange gasket and adding grease to the gate valve

The operationmethod of replacing the flange gasket and adding grease to the gate valve 01 Preparations Get your butter,grease gun, cotton yarn ready. ...

LNG: Significant opportunities for cryogenic valves

Quenching the world’s thirst for energy while mitigating climate change and air pollution is one of the greatest challenges of the 21st century. Natu...

VELAN VTP-2000 Ball Valve

A high performance ball valve with an affordable price Velan Inc., a leading manufacturer of high quality industrial valves for a broad range of indus...

Why PTFE-Lined valves should be cossetted

“Every day is a learning opportunity”, is a saying which is often heard here in the Valve World editorial department. After all, the valve industry is so diverse, and the number of applications so huge, that no-one (and certainly not a humble editor!) can possibly hope to know everything.

Valve maintenance on its way to the cloud

Edited by Constanze Schmitz, Analyst ARC Advisory Group Europe ___ In the process industries, one of the most important, yet often over-looked assets,...

18''RF WCB Butterfly valve

Customized top connection dimensions 18'' RF WCB butterfly valve supplied to power plant service for high temperature steam pipeline

News

Different valve body and valve bonnet material for different medium temperature

Author : Cowinns Source : Cowinns Release on : 2020-06-10 17:02:20

Different valve body and valve bonnetmaterial for different medium temperature

The maximum applicable temperature of graycast iron valve body and valve cover is 250℃.

The maximum applicable temperature of themalleable cast iron valve body and valve cover is 300℃.

The maximum service temperature of mediumsuitable for ductile iron valve body and valve cover is 350℃.

High-silicon cast iron valve body and valvecover are suitable for medium with a maximum service temperature of 120℃.

The maximum service temperature of carbonsteel valve body and valve cover is 425℃ (forgings 16Mn and 30Mn can reach 450℃).

The maximum service temperature of Cr5Moalloy steel valve body and bonnet is 550℃.

And one type high pressure hightemperature check valve was designed with WC6 material for hightemperature steam pipeline

The maximum service temperature of1Cr18Ni9Ti and Cr18Ni12Mo2Ti stainless steel valve body and valve cover is 600℃.

The maximum service temperature of copperalloy valve body and valve cover is 200℃.

The maximum service temperature of titaniumvalve body and valve cover is 300℃.

The maximum service temperature of themedium suitable for plastic valve body and valve cover: nylon 100℃, chlorinated polyether 100℃, polyvinyl chloride 60℃,polychlorotrifluoroethylene-60~120℃, polytetrafluoroethylene-180~150℃ .

The rubber diaphragm valve depends on thetype of rubber, natural rubber 60 ℃; nitrile rubber, neoprene 80 ℃; fluorine rubber 150 ℃.

When rubber or plastic is used for valvelining, the temperature resistance of rubber and plastic shall prevail.

Ceramic and glass valves have poortemperature resistance and are generally used below 90°C.

The temperature resistance of the enamelvalve is limited by the material of the sealing ring, and the maximum mediumtemperature exceeds 150℃.

Previous : Introduction of valve anti-corrosion lining materials
Next : Introduction for fluoroplastic lined full port ball valve