High temperature ball valve were used on what kind of conditions: high temperature ball valve above 250 ° called high temperature ball valve, high temperature below 250 ° ball Industrial Valves sealing surface material usually use PPL. More than 250 ° with hard seal material. A high temperature ball valve: 250 degrees of high temperature ball valve as usual for popular hot water, heating water, steam system, oil, food, etc. , under the condition of the working temperature is not higher than 250 °. Second high temperature ball valve: more than 250 ° will choose hard seal ability of high temperature ball valve, hard seal of high temperature ball Industrial Valves body WCB capable to 425 ° c, coefficient of hardness is HRC45 - 58. Hard seal structure design of high temperature ball valve for high temperature ball valve two-seater single seal hard seal. The valve body material for cast steel ( WCB) , the ball is 2 cr13 + nitride ( 2 cr13 + STL) Sealing material for STL cemented carbide. Our factory adopts single seal structure: a wall with graphite sealing, the spring seat and the ball to the other wall across the top, as light design, Beijing design makes this valve opening and closing force and sealing performance is very good also. So have the benefits of the product, wear-resisting, high temperature resistant, light switch, long service life. Three high temperature ball valve, hard seal of high temperature over 425 ° ball valve is a kind of high temperature, should choose WC6 materials. Wear-resistant hard seal of high temperature ball valve. Ability to 590 °, the highest temperature. On both sides of the valve seat is spring spring made on both sides of the seat tightly embraces its sealing effect. Seal material selection, tungsten carbide, spherical spray welding. So much the hardness coefficient of HRC68 - Graphite sealing between 72 seat and body, so the temperature can withstand temperatures up to 590 ° hard seal ball valve: are the benefits of good sealing performance, high temperature resistant, wear resistant, easy opening and closing, high temperature and hard seal ball valve sealing characteristics of the most important is to use metal sealing deputy, its advantage is applicable temperature range, thermal expansion coefficient of various metal were similar, as long as the proper can achieve basic same, is conducive to the harmonious deformation temperature. Ointment is the material hardness, achieved the seal must be higher than the pressure, even if the pre-tightening force to seal, but because of the sealing pressure is big, the wear between the seat and ball is big, and because the metal sealing surface friction coefficient is bigger, lead to a ball valve opening and closing torque is bigger. As a result, high temperature ball valve adopts the elastic seal mostly, its performance is reliable, flexible compensation ability is strong, wide temperature scope of application, and the floating ball valve and the fixed ball ball valve. There's another saying pipeline medium more than 280 ℃ under the condition of hard seal ball Industrial Valves must be used, it is also can work under high temperature conditions.
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