The 12X series pressure manifolds are designed for expanding pressure test ports during pressure calibration. The Additel 121 and 125 pressure manifolds are used for pneumatic pressure calibration up to 3000 psi (200bar), while the Additel 123 and 126 manifolds are compatible to hydraulic pressure applications up to 10,000 psi (700 bar). A filter is built-in with the 121 and 125 pneumatic pressure manifolds to prevent contamination introduced by devices under test. There are four hand-tight quick connectors pre-installed on each manifold. The manifold arms of the 125 and 126 are foldable to allow the user to adjust the position of the DUTs. Additel 12X series pressure manifolds allow you to connect without the use of wrenches or Teflon tape which increases your productivity when using calibration pumps, pressure controllers, dead weight testers, or piston gauges.