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Installation Recommendations

SHP Series Butterﬂ y Valves

Storage of Butterfly Valve Assemblies

Assemblies must be stored indoors, protected from the elements.

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Materials received on job sites that have long installation lead times

should receive extra protection from construction damage.

Valve faces must be protected from abrasion, cutting and nicking, as

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this will damage the face and may cause flange area leaks.

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Electric actuators cannot be stored in wet, damp or caustic areas.

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Do not store construction material on top of valve assemblies.

Installation Practices

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SHP series butterfly valves are designed to be installed between

ANSI 125/150 flat-faced or raised face, slip-on weld neck flanges.

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Valve should be installed a minimum of 6 pipe diameters from

upstream or downstream elbows, strainers, pumps, etc.

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For chilled water, condenser water or hot water applications, the

valve should be installed with the stem in a vertical orientation,

with the actuator mounted above the valve.

For applications in which there is a possibility of sediment in the

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flow, the valve should be installed with the stem in a horizontal

position and the bottom of the disc should close FROM the

downstream side, rather than from the upstream side.

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Flange gaskets must be used on SHP series BF valves.

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Make sure the flange faces are clean and free of rust, scale and

debris to prevent damage to the flange gasket.

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Follow the recommended flange bolting sequence found in the

"Installation Recommendations" section of this guide.

800-543-9038 USA

118

Installation using Welded Flanges

Mount flanges on both sides of valve body and install bolts to

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properly align valve body and both flanges.

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Make sure the valve I.D. and flange internal diameters are in

alignment.

Take valve body / flange pair assembly and align with piping ends.

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TACK weld the flanges to the piping in several places.

Do NOT seam weld at this time!

Remove the lug bolts and carefully remove the valve body from the

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flanges.

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Seam weld the entire flange / piping connection for both flanges.

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Let the piping components cool completely before re-inserting the

valve body.

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WARNING! Seam welding with the valve body installed between the

flanges can damage the valve seats due to heat migration through

the flange to the valve body.

Butterﬂ y Sizing and Selection

CONSULT CHART ON PAGE 21

(Flow in Standard Weight Pipe-Fluid Velocity in GPM).

For SHP Series Butterfly Valves, the 32 ft/second column is applied.

For example: Application requires a 2-way, 600 GPM Butterfly

valve, a valve of 3" minimum would be selected. The 3" valve at

32 ft/second would be able to withstand a capacity of 705 GPM,

without damage to the seat.

Notes

1. Most Butterflies are line size and piping geometry is not

considered. If valve size must be reduced, a recommendation

is to select a valve only one size less than the pipe. (Do not

exceed velocity limit)

2. For a modulating Butterfly valve, the Cv rating is determined at

60° open. For a 2-position Butterfly valve, the Cv is

determined at 90° open.

Consult Belimo Technical Support for applications involving

steam, high velocity requirements, etc.

866-805-7089 CANADA

203-791-8396 LATIN AMERICA / CARIBBEAN