Installation manual

4.9.7. PVC 4 jet manifold – for PVC pipes and the

TRG turbine

A PVC manifold option is available to special order, as

shown. These are tricky to put together and final gluing must

be done by the end client. They do give a very clean and

professional look and some clients will prefer this option.

4.9.8. PVC manifolds for our PLT turbines

PowerSpout can supply PVC manifolds for our PLT

turbines with either 2” BSP/NPT threads or 2.5” BSP

threads. As PVC sizes are often different from one

country to another, using a common thread size as a

connection method is often the best way to avoid

problems on site.

The picture shows two turbines connected via PVC

manifolds to a mac-union and then to the black

plastic MDPE pipe via a threaded connection.

The penstock was separated into 2 lines prior to feeding each manifold by using a T and 90

degree elbows.

4.9.9. Pipe fittings - T’s and 90 degree elbows

For many sites HDPE pipe fittings can be used to

build a manifold.

You are likely to need

 T’s

 90 degree elbows

 Joiners

 Thread adaptors

If you are installing just 1-2 PLT turbines then it is

likely you are using 63-110 mm OD MDPE pipe.

Offcuts of this pipe with some fittings can be used to

make a low cost splitter manifold combined with a

factory made PVC manifold as shown.

All the bends in the manifold

opposite do not result in significant

losses since the penstock pipe is

80mm ID; this splits into 2x80mm ID

pipes, then this is split again into

2x65mm ID PVC pipes. This means

that the water velocity in the PVC

pipes is 1/3 of that in the penstock,

so losses will be very low. We will

show you how to check for

penstock losses later with a

pressure gauge.