FAQs

FAQ

FREQUENTLY ASKED QUESTIONS

What are your prices and quality lever?

TWS Valve price is very competive if same quality,and our quality is high.

Why some other suppliers price much lower?

If so,quality must different,they use bad ductile iron/steel ,and bad rubber seat,their weight lower than normal,their valve’s service life also much shorter.

Which cerfication your company aprroved?

TWS Valve have CE,ISO 9001,WRAS,ISO 18001.

What’s the design standard of your butterfly valve?

TWS butterfly valve meet API 609,EN593,EN1074,etc;

What’s the difference of your YD butterfly valve and MD butterfly valve?

The main difference is flanged drill of YD is universal standard of
PN10&PN16&ANSI B16.1, But MD is specific.

What’s the nominal pressure of your rubber seated butterfly valve?

TWS butterfly valve can meet normal PN10,PN16,But also PN25.

What’s the max size of your valve?

TWS Valve  advantage is big size valve,like wafer/lug type butterfly valve,we can offer DN1200,flanged type butterfly valve,we can offer DN2400.

Can you produce valve by OEM with our brand?

TWS Valve can produce valve with your brand if qty meet MOQ.

Can we be your agent in our country?

Yes,if you could be our agent ,price will be better and lower,production date will be shorter.