TianKang HongJi QFF3 Five Valve Manifold is engineered for precise differential pressure measurement and safe instrument isolation in demanding process environments. Designed with a compact solid-body structure, it features double block and double bleed functions to ensure reliable pressure equalization, calibration, and venting. The non-flanged design provides versatile installation options, reduced leak paths, and enhanced durability for oil & gas, chemical, petrochemical, power generation, and industrial automation applications. This manifold delivers stable performance, long service life, and maintenance efficiency for critical instrumentation systems.