Metal sealed rotary ball valve

Metal sealed rotary ball valve

Overview: The valve is the company combined with the performance characteristics of the hard seal screw valve, half ball valve, ball valve, a newly developed structure of the valve, is currently on the market cost-effective ball valve products, after users use high evaluation.

 

Overview

The valve is the company combined with the performance characteristics of the hard seal screw valve, half ball valve, ball valve, a newly developed structure of the valve, is currently on the market cost-effective ball valve products, after users use high evaluation.

 

Model Interpretation

 

Features

(1), in the two sealing surface of the sealing pair according to different hardness needs, the use of plasma spraying, surfacing and other advanced processes to form martensitic stainless steel, austenitic stainless steel, hard alloy and other gradient functional materials;

(2), can automatically align the center (adaptive), and can automatically compensate for wear over the distance; Not only can it be reliably shut down in the forward pressure, but also can be reliably shut down in the reverse pressure or the reverse pressure is much greater than the forward pressure. When closing, make full use of the energy of the medium in the valve and automatically apply high sealing ratio pressure to make the high hard sealing pair achieve reliable zero leakage;

(3), its main structure is similar to the butterfly valve, with the structure of the butterfly valve is short, small size characteristics, which can be manufactured large diameter, extra large diameter, large diameter valve; two-way hard seal rotary ball valve at the same time both butterfly valve, half ball valve, gate valve and globe valve functions and advantages, but also has its own completely different powerful functions and advantages. A series of advantages such as small size, light weight, convenient transportation, installation, maintenance and repair, and reliable operation. Instant close, instant open seal vice room without sluggishness. The projected section of the valve plate shrinks inward and retreats continuously when it is opened, and retreats faster than inward when it is initially opened. When closing, the projected section of the valve plate expands and advances continuously. At the beginning of closing, the expansion rate is greater than the forward rate, and at the end of closing, the forward rate is greater than the expansion rate. It has the characteristics of eccentric half ball valve (high pressure ball valve), globe valve and wedge gate valve.

 

Executive standards

 

Main technical performance parameters

Material of main components

 

Outline structure diagram and connection dimension of metal sealing rotary ball valve

 

QDH3401-6 ~ 10 worm gear drive metal seal rotary ball valve

 

QDH3401-16 ~ 25 worm gear drive metal seal rotary ball valve