Split valves for regulating fluid flow in closed loop systems

A split valve to regulate a first flowrate and a second flowrate of a first fluid within a closed loop system, the split valve comprising:

• a piston within a first fluid chamber, the piston to cause the first flowrate and the second flowrate of the first fluid, the first fluid pressurized to a first pressure, the first fluid chamber including an inlet port, a first outlet adapter port, and a second outlet adapter port;
• a second fluid chamber adjacent to the first fluid chamber including a second fluid pressurized to a second pressure that is less than the first pressure and greater than an ambient pressure;
• a first bellows fixed to the piston and to the first fluid chamber, the first bellows to hermetically seal the first fluid chamber from the second fluid chamber;
• a second bellows fixed to the piston and to the second fluid chamber, the second bellows to hermetically seal the second fluid chamber from ambient air;
• and
• a spring fixed to at least a seat or a body of the split valve, the seat fixed to at least the piston or the body, the spring to counteract the first pressure acting on the piston and to dampen movement of the piston.