STAF-SG – ANSI flanges

07-06-2016

A flanged, ductile iron balancing valve that delivers accurate hydronic performance in an impressive range of applications. The STAF-SG is ideal for use mainly on the secondary side in heating and cooling systems.

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Balancing valve size 3/4″ – 16″

A flanged, ductile iron balancing valve that delivers accurate hydronic performance in an impressive range of applications. The STAF-SG is ideal for use mainly on the secondary side in heating and cooling systems.

 

Key features

 

Handwheel

Equipped with a digital read-out, the handwheel ensures accurate and straightforward balancing.

 

Self-sealing measuring points

For simple, accurate balancing.

 

Positive shut-off function

For easy maintenance.


 

Technical description

 

Application:

Heating (not steam) and cooling systems

 

Functions:

Balancing
Pre-setting
Measuring
Shut-off (The restriction cone for valve sizes 2 1/2″ – 16″ is pressure released).

 

Dimensions:

3/4″ – 16″

 

Pressure class:

Class 150

 

Temperature:

Max. working temperature: 248°F
Min. working temperature: -4°F

 

Material:

Body: Ductile iron, EN-GJS-400-15 (~ ASTM A536 Grade 60-40-18. ISO 1083 Grade 400-15).
Size 3/4″ – 6″: Bonnet, restriction cone and spindle of AMETAL®.
Size 8″ – 12″: Bonnet of ductile iron, cone of Bronze and spindle of AMETAL®.
Size 14″ – 16″: Bonnet of ductile iron, cone of silicon brass CuZn16Si4-C (EN 1982) or brass CuZn35Pb2Al-C-GS (EN 1982) and spindle of AMETAL®.
Seat seal: Cone with EPDM ring.
Bonnet bolts: Chromed steel.
Handwheel: Size 3/4″ – 6″ polyamide, size 8″ – 16″ aluminum.
AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.

 

Surface treatment:

Size 3/4″ – 8″: Epoxy painting.
Size 10″ – 16″: Duasolid painting.

 

Marking:

Size 3/4″ – 2″: TA, PN, DN (mm), 400-15 (material) and flow direction arrow.
Size 2 1/2″ – 16″: TA, Class 150, size (inch), 60-40-18 (material), casting date and flow direction arrow.

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