Selling Cheap Valve Manifolds from PT Inovasi Sinergi Jaya in Jakarta. Manifold is an instrument that is equipped with one or more valves, which can be connected to the transmitter. There are several manifolds that are specifically designed to be attached to a pressure transmitter. They are mostly made of stainless steel, carbon steel, or alloy. Manifolds can be a perfect alternative to multivalve systems. Manifolds are widely used in sectors such as oil & gas, chemicals, waste water, electricity, and so on.