Masoneilan*
BR200/BR400
High Capacity Volume Booster Relays
Instruction Manual (Rev. B)
BHGE Data Classication : Public
2 | BHGE
© 2019 Baker Hughes, a GE company. All Rights Reserved.
THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT PROJECT-SPECIFIC
REFERENCE INFORMATION IN ADDITION TO THE CUSTOMER/OPERATOR’S NORMAL OPERATION AND
MAINTENANCE PROCEDURES. SINCE OPERATION AND MAINTENANCE PHILOSOPHIES VARY, BHGE (BAKER
HUGHES, A GE COMPANY AND ITS SUBSIDIARIES AND AFFILIATES) DOES NOT ATTEMPT TO DICTATE
SPECIFIC PROCEDURES, BUT TO PROVIDE BASIC LIMITATIONS AND REQUIREMENTS CREATED BY THE TYPE
OF EQUIPMENT PROVIDED.
THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL UNDERSTANDING OF THE
REQUIREMENTS FOR SAFE OPERATION OF MECHANICAL AND ELECTRICAL EQUIPMENT IN POTENTIALLY
HAZARDOUS ENVIRONMENTS. THEREFORE, THESE INSTRUCTIONS SHOULD BE INTERPRETED AND
APPLIED IN CONJUNCTION WITH THE SAFETY RULES AND REGULATIONS APPLICABLE AT THE SITE AND
THE PARTICULAR REQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT AT THE SITE.
THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT NOR
TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH INSTALLATION,
OPERATION OR MAINTENANCE. SHOULD FURTHER INFORMATION BE DESIRED OR SHOULD PARTICULAR
PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE CUSTOMER/OPERATOR'S PURPOSES
THE MATTER SHOULD BE REFERRED TO BHGE.
THE RIGHTS, OBLIGATIONS AND LIABILITIES OF BHGE AND THE CUSTOMER/OPERATOR ARE STRICTLY
LIMITED TO THOSE EXPRESSLY PROVIDED IN THE CONTRACT RELATING TO THE SUPPLY OF THE EQUIPMENT.
NO ADDITIONAL REPRESENTATIONS OR WARRANTIES BY BHGE REGARDING THE EQUIPMENT OR ITS USE
ARE GIVEN OR IMPLIED BY THE ISSUE OF THESE INSTRUCTIONS.
THESE INSTRUCTIONS CONTAIN PROPRIETARY INFORMATION OF BHGE, AND ARE FURNISHED TO
THE CUSTOMER/OPERATOR SOLELY TO ASSIST IN THE INSTALLATION, TESTING, OPERATION, AND/OR
MAINTENANCE OF THE EQUIPMENT DESCRIBED. THIS DOCUMENT SHALL NOT BE REPRODUCED IN WHOLE
OR IN PART NOR SHALL ITS CONTENTS BE DISCLOSED TO ANY THIRD PARTY WITHOUT THE WRITTEN
APPROVAL OF BHGE.
© 2019 Baker Hughes, a GE company. All Rights Reserved.
Masoneilan BR200/BR400 High Capacity Volume Booster Relays | 3
Product Description
BHGE’s Masoneilan BR400 and BR200 are high capacity volume boosters for applications that require fast
stroking speeds using pneumatic actuators. Stable operation over a wide range of actuator sizes can be obtained
by adjusting the bypass valve on the booster to modify the dynamic response. The models BR200 and BR400 are
equally suitable for use on diaphragm or piston actuators.
Features and Benefits
• Flow characteristics suitable for control valves
• Short stroking times with consistently stable operation for use on high-volume actuators or on very
demanding stroking time control valve applications
• Built-in bypass valve with locking screw to adjust sensitivity and dynamic response
• Filter on the supply port to protect instrument from particles in air supply
• Corrosion resistant finish and stainless assembly hardware to permit use in corrosive atmosphere
Principle of Operation
The input signal pressure is applied to the upper diaphragm to produce a force that is opposed in a 1:1 ratio by
the output pressure acting on the lower diaphragm through the seal plate orifice. An increase in the input signal
pressure will depress the top diaphragm and open the pilot valve, allowing supply pressure to the output until the
output pressure action on the lower diaphragm re-balances the forces. Conversely, a decrease in the input signal
pressure allows the exhaust valve to open until the output pressure falls to the same value as the input signal
pressure.
A bypass valve allows a controlled flow of input signal direct to the output to obtain stable control for small or
slow changing input signals.
4 | BHGE
Figure 1 - Cut-away View of BR400 Booster Relay
© 2019 Baker Hughes, a GE company. All Rights Reserved.
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