pipeline full welded ball valve ( Buried all welded ball valve) Before installation should be pressure test to ensure the rigor and security of the valve itself.

1。 All welded ball valve test: ( 1) Strength test, strength test using water as medium; The valve on both sides of the sleeves on the welding of high pressure & ndash; Booster to ball Industrial Valves nominal pressure of 1. Five times the pressure maintaining 15 min; As a qualified without leakage. ( 2) Leak test: close. some trials using nitrogen as medium; Pressure to ball valve nominal pressure of 1. Insert depth to 1 cm; No air bubbles in the 5 min for qualified. 2. Pipeline full welded ball valve ( Buried all welded ball valve) The installation of ( 1) Lifting: should adopt the way of correct lifting valve, in order to protection Industrial Valves rod, don't tie chain hoist in hand wheel, gear box and actuators. ( 2) Weld quality must conform to the plate bending melting welding joint radiography ( GB3323— 2005). Ⅱ level standard, usually a welding cannot fully guarantee all qualified, so on both ends of the valve when the valve should be required to manufacturer to order 1. 0 m long sleeve tube, once the unqualified weld has enough length to unqualified weld mutilation in ball valve and pipe welding and welding, when the Industrial Valves is in full open position 100%, in order to avoid valve ball damaged by splashing slag, while ensuring the internal valve seal temperature not to exceed 140 degrees Celsius, can take the appropriate cooling measures when necessary.
An increasing dependence on the use of wedge valve y gate valve has made numerous changes in the os&y gate valve industry over the past decades.
Always do our research, follow the rules and plans ahead for additional expenses. Expanding is the goal of Shenzhen Mech Valve Trading Co., Ltd.; expanding properly is the goal of the wise business.
Shenzhen Mech Valve Trading Co., Ltd. believes that the shorter the path between consumer and product, the more likely businesses are to convert more sales.