Overview

NSEN Triple offset uni-directional butterfly valve adopts the replaceable sealing structure of “Stainless steel and graphite laminated ”. This series could reach uni-directional Zero-leakage requirement in related standard. Trim material is made of high quality stainless steel, it could avoid the corrosion problem after long time using.

• Multi-layer sealing & solid metal sealing

• Low opening torque

• Friction free between seat and sealing

• Fire safe design to API607

• Replaceable Disc Sealing

NSEN strictly follow the free repair, free replacement and free return services within 18 months after the valve is ex-works or 12 months after being installed and used on the pipeline after ex-works (upon which comes first). 

In the case the valve gets failed due to the quality problem during the use in the pipeline within the quality warranty period, NSEN will provide free quality warranty service. The service shall not be ended until the failure is surely made settled and the valve normally workable as well as the client signs the letter of confirmation.

After expiration of the said period, NSEN guarantees to provide the users with on-time quality technical services whenever the product needs to be repaired and maintained.