... : GB, BS, JIS and so on.3. Thread type: G, R, BSP, NPT2. Pressure Grade: 2.5MPa.AN3. Design standard: GB/T8464 ... . Long service life: more than fifty years under the normal pressure and temperature.Application:1. Residential cool/hot water piping system ... heating equipment.7. Piping system for other industries and agriculture. High quality male thread PPR ball valve