Rosemount R305 User Manual

Rosemount R305 & R306 Enhanced Manifolds

Simplify operations, increase safety, and enhance reliability

CHALLENGE

Manifolds serve as a critical mounting mechanism required in many
installations and are vital to efficient plant operation because of their
ability to shut-off or equalize pressure at the transmitter. However,
traditional manifolds can be difficult to operate, present potential

safety risks, or degrade over time, leading to sub-optimal performance.

OUR SOLUTION

The Rosemount™ R305 is designed for both differential or gauge
pressure applications and assembles directly to any Rosemount
Coplanar™ transmitter for a complete solution. The Rosemount
R306, designed for in-line pressure transmitters, is suited for gauge
or absolute pressure applications.

HOW IT WORKS

• Exclusive Pressure-Lock™ Valve technology offers simplified
operation, increased safety, and enhanced reliability.

• Two-piece stem with non-rotating tip provides minimal wear and
reduced potential leak paths.

• Enhanced valves offer increased ease of use and improved
operator ergonomics through smoother operation.

• Stem and bonnet threads are fully isolated from the process
fluid to minimize corrosion.

• When selected with a transmitter, Rosemount R305 and R306
components are fully assembled, high-pressure leak tested at
the factory, and arrive ready to install.

WHAT IF...

...you could increase the
equipment life of your
pressure transmitter
manifolds?

...you could more safely and
easily operate manifolds in
your facility?

Key Innovations

• Larger internal passages
resist plugging and
enhance reliability

• Backseating prevents
blowouts for increased
user safety

• Two-, three-, and five­valve configurations
available

For more information visit

Emerson.com/RosemountR305

or contact your local Emerson Sales Representative

Designed for enhanced operations, safety, and reliability

A. Removable handle with recessed handle set screw adds

A

B

C

D

E

security, reduces unwanted tampering, and improves handle
clearance

B. Color-coded dust caps reduce valve confusion

C. Packing nut allows for smooth adjustment of stem packing

F

D. Two-piece stem design with non-rotating tip provides

smooth, ergonomic operation and reduces potential
leak paths

E. Safety back seating provides integral blowout protection

G

F. Isolated stem threads increase equipment life and operator

safety

G. Modular packing located below stem threads isolate thread

from process fluid, preventing corrosion

H

H. Isolated bonnet threads improve corrosion resistance

and equipment life with metal-to-metal, bonnet-to-body seal

I

I. One-piece needle tip stem ensures seal integrity over a wide

range of pressures and temperatures

ASSOCIATED PRODUCTS

Rosemount 3051S Coplanar

Pressure Transmitter

Rosemount Global Headquarters

Emerson Automation Solutions

6021 Innovation Blvd.
Shakopee, MN 55379
USA

[phone] or [phone]
[phone]
[e-mail]

Standard Terms and Conditions of Sale can be found at

www.Emerson.com/en-us/pages/Terms-of-Use.aspx

The Emerson logo is a trademark and service mark of Emerson Electric Co.
Rosemount and Rosemount logotype are trademarks of Emerson Electric Co.
All other marks are the property of their respective owners.
©2019 Emerson. All rights reserved.

00807-0100-4733 Rev AA

Rosemount 3051S In-Line Pressure

Transmitter

Consider it Solved.

Emerson Automation Solutions supports you with
innovative technologies and expertise to address your
toughest challenges. For more information, visit

Emerson.com/RosemountR305

Rosemount 3051S Wireless Pressure

Transmitter