Connectionless manifold

29 December 2001

Parker Hannifin has come up with an innovative design for Rosemount coplanar process transmitters. The manifold has factory-fitted compression tube ends, which eliminate the need for PTFE tape or sealant, and, which the company claims make it impossible to damage the manifold body because of mis-assembly or thread galling.

The 3051 coplanar transmitters are smaller and lighter than conventional process instruments, but have a new style of sensor interface. This requires either a flange to adapt the instrument for conventional manifolds, or a new type of manifold that can interface directly. Parker’s CP range of coplanar-compatible manifolds provides this direct connection, utilising design principles that promise to boost integrity and life expectancy compared with competitive products.

The use of twin or single- ferrule fittings eliminates the need for any PTFE tape or anaerobic sealant, a major cause of problems in the field. This makes the manifolds suitable for unmanned environments, and applications involving hazardous fluids or oxygen.

For flow and pressure transmitter users, the manifolds can be used in combination with Parker’s one-piece flanges for interfacing process piping to fluid instrumentation, which also have integral compression tube fittings.

Parker CP manifolds are available in 2, 3 and 5-way variants for pressure and flow applications, rated for pressures of up to 6,000psig. They come fitted with low operating torque globe-style valve cartridges. This configuration makes them suitable wherever positive shut-off performance at high pressure is required.

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