Pig valve structural characteristics and function of 1, a multi-purpose valve: the valve is a kind of novel tube emitting and receiving device as the Qing Dynasty, it also has a two bit general purpose type truncated spherical function.
2, labor-saving operation: the sphere is supported between the valve body and valve cover, and lined with good self lubrication performance and wear properties of copper alloy sliding bearing seat and the sphere, force to get an accurate control. The stem is not affected by the ball thrust, flexible stem rotation.
3, fast opening blind plate: blind plate and valve between the jaw type, convenient operation, fast opening blind plate valve is connected with the larger size of rocker arm hinged on the valve body, so even removing and installing large size valve fast opening blind plate are very fast and easy.
4, fireproof structure: visit to check the sudden appearance of heat and fire, the elastic sealing ring is damaged, the ball and seat sealing formation of metal and metal. The valve body and the valve and the valve stem parts are set graphite gasket of high temperature resistance, ensure the sealing reliability of high temperature. Fire test meet the requirements of API6FA and AIP607 standard.
5, an antistatic structure: in order to prevent the ball and stem and medium or sealing ring friction and static electricity, arranged conducting electrostatic spring and the contact between the stem and the ball and the valve rod and the valve body, the electrostatic through pipes into the ground, to ensure the system security.
6, the interlocking structure: the vent valve and the quick opening blind plate locking interlocking, in the vent valve not open pressure relief before, can not open the blind plate. To ensure the safety of operation.
7, the auxiliary seal set: the valve is provided with auxiliary seat emergency seal system, once the seal is damaged or error emergency can not seal, through the auxiliary sealing system to repair sealant sealing surface can be injected with sealing, reached the emergency seal. When the conveying medium unclean or containing a small amount of particles, in order to protect the sealing surface of the reliability, device can also be injected to the corresponding cleaning agent and lubricant on the sealing surface cleaning.
8, cleaning: body set the water injection valve, when transporting toxic medium valve body cavity flushing by water injection valve is provided with a spray head, through the drain valve into the sewage tank.
9, widely used in petroleum, chemical, oil, natural gas, steam, water and other media,.