A fluid treatment arrangement comprising - a fluid treatment assembly having a first fitting at a first end of the fluid treatment assembly and a second fitting at an opposite second end of the fluid treatment assembly, - a manifold assembly having a first fitting and a second fitting, the first fitting of the manifold assembly being disposed at the first end of the fluid treatment assembly and the second fitting of the manifold assembly being disposed at the opposite second end of the fluid treatment assembly, and - an actuator assembly cooperatively arranged with the manifold assembly, said actuator assembly being movable between a first position, wherein the first fittings of the fluid treatment assembly and the manifold assembly are uncoupled from one another and the second fittings of the fluid treatment assembly and the manifold assembly are uncoupled from one another, and a second position, wherein the first fittings of the fluid treatment assembly and the manifold assembly are sealingly coupled and the second fittings of the fluid treatment assembly and the manifold assembly are sealingly coupled, thereby allowing fluid to flow between the first fittings and between the second fittings, characterized by - a carriage which holds the fluid treatment assembly with the first fitting and the second fitting aligned with the fittings (30; 31) of the manifold assembly and - said actuator assembly being configured as a pivoting mechanism comprising a handle pivoting between first and second positions thereby effecting a relative coaxial, linear movement of the fittings (22, 23; 30, 31) and wherein by moving the actuator assembly from the first to the second position, the fittings (22, 23) at both ends of the fluid treatment assembly are sealingly coupled to the corresponding fittings (30, 31) of the manifold assembly. - a fluid treatment assembly having a first fitting at a first end of the fluid treatment assembly and a second fitting at an opposite second end of the fluid treatment assembly, - a manifold assembly having a first fitting and a second fitting, the first fitting of the manifold assembly being disposed at the first end of the fluid treatment assembly and the second fitting of the manifold assembly being disposed at the opposite second end of the fluid treatment assembly, and - an actuator assembly cooperatively arranged with the manifold assembly, said actuator assembly being movable between a first position, wherein the first fittings of the fluid treatment assembly and the manifold assembly are uncoupled from one another and the second fittings of the fluid treatment assembly and the manifold assembly are uncoupled from one another, and a second position, wherein the first fittings of the fluid treatment assembly and the manifold assembly are sealingly coupled and the second fittings of the fluid treatment assembly and the manifold assembly are sealingly coupled, thereby allowing fluid to flow between the first fittings and between the second fittings, characterized by - a carriage which holds the fluid treatment assembly with the first fitting and the second fitting aligned with the fittings (30; 31) of the manifold assembly and - said actuator assembly being configured as a pivoting mechanism comprising a handle pivoting between first and second positions thereby effecting a relative coaxial, linear movement of the fittings (22, 23; 30, 31) and wherein by moving the actuator assembly from the first to the second position, the fittings (22, 23) at both ends of the fluid treatment assembly are sealingly coupled to the corresponding fittings (30, 31) of the manifold assembly.