Overview

ZDF series vacuum and eccentric butterfly valve is special used on oil-immersed transformer. We design and manufacturer our ZDF's vacuum and eccentric butterfly valve according to China JB/T 5345-2005 <Butterfly for transormer> Standard. Our the vacuum and eccentric butterfly valve is the newest porduct based on summarizing, analyzing and revising similar products from home and abroad, It has good structure and there is excellent material in sealed component. It can withstand the high oil temperature and without leakage during the long operation. Since every component was designed exquisitely, it can orate in a small moment.

1. Sealed valve plate deviates from rotation center of core shaft, valve plate and core shaft form a single sealed system, whic can reach an ideal sealed effect;

2. A small operating torque;

3. Assure open and close operation nicely;

4.  Prevent the valve plate from closing freely at the impacting of oil flow;

5.  All of valves surface is Machining, adaptive stoving varnish, Spray or Electroface nickel-osphorus alloy, so it have a great Anti-rust capability;

6. 6. Surface is smooth and pleasing to the eye.

Technology parameters

1.working temperature：-30℃~105℃

2.Sealing performance:

pressure sealed performance: withstand 0.5Mpa, without leakage;

3.Vacuum sealed performance:

When the absolute pressure is 32Ps, keep the leakage rate than 1.33Pa.L/S for 10 min.

4.Mechanical life strength:

Butterfly valve is open completely, close 1000times, sealed parts are abraded less than 0.05mm.

5.Rotating torque

If you need to know about more parameters , Please check the model selection manual.↓↓↓