Notice for 2.0: If you're looking for valves then have a look at the new mod Valves, or a different approach where all three valves are within one entity in Configurable Valves. It will be worked into Flow Control at some point.

This mod adds three valves and three rotatable pipe shapes with limited connectivity.
The valves and pump are unlocked by researching Fluid handling, the pipes have no research requirement.

Non-return valve

• Also known as a check valve, this allows full-speed flow in one direction, indicated by the green arrow.
• Can output its fluid level to red/green wires.
• Recipe: 1 iron plate, 1 iron gear, 1 pipe

Overflow valve

• Allows flow in the direction of the orange arrow, but only when the input pressure is above 80% (i.e. the attached pipe or tank is 80% full). The maximum flow rate of the overflow valve is less than a regular pipe. Useful as an outlet for excess production, for example cracking excess heavy oil when lubricant supply exceeds demand.
• Can output its fluid level to red/green wires.
• Recipe: 1 electronic circuit, 1 iron plate, 1 iron gear, 1 pipe

Top-up valve

• Allows flow in the direction of the white arrow, but only when the output pressure is below 80% (i.e. the attached pipe or tank is less than 80% full). The maximum flow rate of the float valve is less than a regular pipe. Useful for topping up or acting as a reduced-priority fluid input. Note that a small amount of fluid will remain in this valve when the pipe is emptied.
• Can output its fluid level to red/green wires.
• Recipe: 1 electronic circuit, 1 iron plate, 1 iron gear, 1 pipe

Pipes

• Elbow, T-junction and straight pipes, that only connect in appropriate directions. Each pipe is crafted from one normal pipe, and when mined drops a normal pipe.

Settings

• New subgroup for pipe items (enabled by default): Moves pipes, pumps and valves to a new line in the crafting menu
• Picked up pipes become base pipes (enabled by default): When picking up T-Junction, elbow or straight pipes, it reverts back to normal pipes.

Recommended mods

• Flow Control for Bob's Logistics | Compatibility mod to add flow control to Bob's pipes and merge valves.
• Fluid Must Flow | Adds larger pipes and valves.

Credits

• GotLag
• snouz (new graphics and details)