The features of metal hard seal ball valve:
1) The design of straight-way type has the features of low resistance and low pressure dropping.
2) It is safe and reliable with the design of the stem which is against blowing out.
3) While operating,you can just rotate the stem for 1/4 circle,which causes less loss due to friction low.The stem has the longevity of service.
4) The sealing surfaces are protected while the valve is woring.When the valve is in the position of full open or total closed,the sealing surfaces are in the state of bing protected,exempting from being washed and the steam eclipse.
5) Use the pre-tight design to make the sealing effect better.
6) Adopt the advanced manufacturing craftsthe supersonic flames spray craft(HVOF).Use the jet fuel as the fuel.After the fully buring of the jet fuel mixet with oxygen,the high speed flame will be produced.By using a special spray gun,the speed of the flame will reach as high as 6,000 yards (over three times of the sound speed).The metal powder will be sprayed onto the surfaces of the ball and the seats at high speed so as to form the layer which has strong adhesive property.The hardness of the layer reaches 6872 HRC.And the layer is ont easily scratched by impurities.
7) Adopt one-to-one grind craft.Because of the extreme hardness of the ball and the seats,we JH valve industry adopt the unique grind material and craft and jigs to carry .out the one-to-one precise grind so as to ensure high quality for eaceh valve.
8) According to the different working condition,we choose different spray craft and layer of sealing surfaces to satisfy the requirements of the working condition which endures the high temperature,wears resistance and bears being washed.
1) The design of straight-way type has the features of low resistance and low pressure dropping.
2) It is safe and reliable with the design of the stem which is against blowing out.
3) While operating,you can just rotate the stem for 1/4 circle,which causes less loss due to friction low.The stem has the longevity of service.
4) The sealing surfaces are protected while the valve is woring.When the valve is in the position of full open or total closed,the sealing surfaces are in the state of bing protected,exempting from being washed and the steam eclipse.
5) Use the pre-tight design to make the sealing effect better.
6) Adopt the advanced manufacturing craftsthe supersonic flames spray craft(HVOF).Use the jet fuel as the fuel.After the fully buring of the jet fuel mixet with oxygen,the high speed flame will be produced.By using a special spray gun,the speed of the flame will reach as high as 6,000 yards (over three times of the sound speed).The metal powder will be sprayed onto the surfaces of the ball and the seats at high speed so as to form the layer which has strong adhesive property.The hardness of the layer reaches 6872 HRC.And the layer is ont easily scratched by impurities.
7) Adopt one-to-one grind craft.Because of the extreme hardness of the ball and the seats,we JH valve industry adopt the unique grind material and craft and jigs to carry .out the one-to-one precise grind so as to ensure high quality for eaceh valve.
8) According to the different working condition,we choose different spray craft and layer of sealing surfaces to satisfy the requirements of the working condition which endures the high temperature,wears resistance and bears being washed.