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Masoneilan 84003 Series SteamForm Installation Guide  |  1

Copyright 2020 Baker Hughes Company. All rights reserved.

Masoneilan 84003 Series Steamform 

Installation

Installation of the Masoneilan 84002 series SteamForm 

products requires a thorough understanding of the 

surrounding operating environment. Product selection 

and evaluation must extend upstream and downstream to 

ensure proper design for successful long-term operation. 

Baker Hughes’s installation guidelines are intended to 

provide recommendations and warnings for the various 

design elements of the steam conditioning system. 

Enhancements to the overall performance of the system 

are tested and documented through years of installed 

experience and proven field-tested methods.

 

Piping System Layout

The design and layout of the piping system are 

important factors for a successful installation of a steam 

conditioning valve. Several performance factors are 

highly dependent upon the proper arrangement of the 

piping system. Without the correct design in place, 

the steam conditioning valve becomes ineffective in 

achieving temperature control and stability. Additional 

Design requirements including selecting pipe size, laying 

out upstream and downstream piping, and positioning of 

control elements are explained throughout this document.

Upstream Pipe Recommendations

Adjacent pipe bends such as pipe elbows and tee 

connections are known to cause high levels of rotational 

forces and excessive vibration when installed in close 

proximity to a valve body. Long-term exposure to this flow 

induced vibration results in problems such as damaged 

trim and excessive noise during operation.
To reduce these risks, a uniform and stable flow profile 

must be achieved prior to admission of the steam into 

the SteamForm valve body. This is accomplished by 

supplying a length of straight pipe, L1, upstream of the 

valve inlet as shown in Figure 1. A straight pipe section 

allows the inlet steam to recover its uniform flow profile 

after passing through the turbulent path of an elbow. 

In the case of an upstream elbow installation, the 

recommended distance of five pipe diameters of straight 

pipe must be mounted upstream of the valve. Longer 

lengths of straight pipe are also desirable. 

 

Minimum upstream straight pipe length: 

L1 = 5 x Nominal Pipe Diameter 

Upstream tee connections involve further consideration, 

as higher levels of turbulence are present in these 

applications. These systems must supply a longer 

length of upstream straight pipe, as higher levels of 

instability exist. Consult your local Baker Hughes sales 

office or factory for the recommended distance for these 

applications.

Summary of Contents for Masoneilan SteamForm 84003 Series

Page 1: ...Baker Hughes Data Classification Public Masoneilan 84003 Series SteamForm Steam Conditioning Control Valve Installation Guide Rev B...

Page 2: ...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...

Page 3: ...Water temperature 8 Strainers 9 Valve installation 9 Valve support 9 Actuator support 9 Orientation 11 Drains and pipe slopes 12 Warm up and preheating steam 13 Insulation 14 Accessibility 14 Tempera...

Page 4: ...ommended orientation of the SteamForm 11 Figure 7 Improper orientation of the SteamForm 11 Figure 8 Vertical flow down outlet orientation should be located at low point downstream 12 Figure 9 Drain ve...

Page 5: ...ing and positioning of control elements are explained throughout this document Upstream Pipe Recommendations Adjacent pipe bends such as pipe elbows and tee connections are known to cause high levels...

Page 6: ...nstallation of a pipe elbow This distance ensures that a sufficient mass of the water droplets is vaporized in order to prevent water fallout and insufficient mixing While this length varies with each...

Page 7: ...misplacement of the temperature element results in uncontrollable operation requiring re engineering to correct the errors of the improperly designed steam conditioning system The proper location of...

Page 8: ...tream where there is a relatively stable flow profile The recommended installation point is five pipe diameters downstream of the valve connection and any pipe elbows See Figure 3 Minimum Pressure Sen...

Page 9: ...es There is a direct relationship between pipe size and turndown that must be evaluated for each installation After selecting the pipe size the next step is to correctly design the pipe wall thickness...

Page 10: ...r once it becomes saturated The length for proper evaporation is determined by multiplying the steam velocity by the sum of t1 and t2 Multiple variables are presented in the calculation and are applie...

Page 11: ...int where the pressure differential becomes too low and yields large slugs of water as opposed to the desired aerosol effect Large slugs of water are ineffective in cooling the steam because their mas...

Page 12: ...iciency of evaporation Cold water sources such as condensate and makeup water require less mass flow to sufficiently cool the steam to the outlet set point The exact amount of water required can be de...

Page 13: ...rolong the active life of the plant and critical pieces of equipment When properly used the steam conditioning valve keeps a plant on line during load rejections and allows the system to return to nor...

Page 14: ...SPRAY WATER 100 MESH STRAINER L1 L2 Figure 5 SteamForm water spray control valve Installation Note The desuperheater nozzle has variable plug to prevent superheated steam back flow to the spray water...

Page 15: ...e steam flow and run along the bottom of the pipe This results in flooding of the downstream steam lines and poor temperature control This is particularly important for applications that need a wide r...

Page 16: ...ow four possible installation scenarios and the desired location of drain connections to protect the SteamForm from passing condensate Drain connections can also be supplied by the factory for install...

Page 17: ...onditions of high temperature steam are forced through the valve upon an upset condition such as a turbine trip These thermal shock scenarios occur when the steam conditioning valve is mounted farther...

Page 18: ...ture feedback control is the most common method for controlling the amount of spray water that is injected into the steam flow This method requires the use of a downstream temperature sensor that rela...

Page 19: ...valves a start up procedure must also be defined up front in the design process Proper cleansing of the steam line and water lines is essential to ensuring performance when the plant becomes operatio...

Page 20: ...eam lines are thoroughly cleaned and hydrotested it is safe to install the operating trim For start up assistance from a certified technician please contact your local Baker Hughes Masoneilan sales of...

Page 21: ...ntial in minimizing the noise generation and the cost of the installation For specific design recommendations it is essential to involve the bypass valve supplier and the condenser supplier up front i...

Page 22: ...18 Baker Hughes Copyright 2020 Baker Hughes Company All rights reserved Notes...

Page 23: ...Masoneilan 84003 Series SteamForm Installation Guide 19 Copyright 2020 Baker Hughes Company All rights reserved Notes...

Page 24: ...of Baker Hughes Company Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners BHMN 84003 IG 31014B 1120 11 2020 Tech Field...

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