Electricity industry standard "procedures to monitor the power industry boiler and pressure vessel" (DL612-1996) 9.1.13 check valve instrument expressly provides: "purely mechanical spring safety valve can be used to adjust the hydraulic device for verification, generally 75% ~ 80% of rated pressure. After the safety valve A28H with handle safety valve hydraulics adjusted, should be at least the minimum safety valve seat from the actual values ??from the seat review. "safety valve means opening height greater than or equal 1/4 channel diameter of the safety valve. This part of the operating characteristics of the two-acting valve safety valve. The main parameters of the safety valve displacement, the displacement depends on the caliber of the valve seat and valve opening height safety valve by opening height with handle different A28H safety valve price, and the whole is divided into Weiqi Kai two. Weiqi is the valve opening height for the seat throat diameter of 1/40 ~ l / 20. Entire Kai is the valve opening height for the seat throat diameter of 1/4. A28H spring safety valve Valve Co., Ltd. specializes in the supply Shandong Everbright A28H spring full-Kai valve products for the whole Kai A28H spring safety valve safety valve A28H latest pictures and parameters, if you need to know, please call and Shandong Everbright Valve Co., Ltd! Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers call to order! Safety valve, the valve manufacturer in Shandong, China Everbright Ltd. valve model provided by Shandong Everbright valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) in this field ball devoted boundless enthusiasm and passion, Everbright valve has been customer-centric, the idea of ??creating value for customers, quality and service to win the market, and sincerely hope to work with the community to create success, create brilliant. Welcome to the relevant business information, Contact: Manager Ma.