1.Valve seat over 50% rubber content, extended durability by 1-2 years; 2. International standard design, special products for International important projects;
1. Small in size, light in weight, easy installation and maintenance. 2. Simple and compact construction, quick 90 degree on-off operation. 3. Minimized operating torque, energy saving. 4. Flow curve tending to straight line, excellent regulation performance. 5. Long service life, standing the test of tens thousands opening/closing operations. 6. Wide selection of materials, applicable to various medium.