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STAF-SG – ANSI flanges

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.

Product Information

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
[°F]
Max. pressure
[psi]
-4 to 100
250
200
235
248
225

Temperature:

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

Media:

Water or neutral fluids, water-glycol mixtures (0-57%).

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 EN-GJS-400-15, cone of gunmetal CuSn5Zn5Pb5 (EN 1982) and spindle of AMETAL®.
Size 14" - 16": Bonnet of ductile iron EN-GJS-400-15, cone of silicon brass CuZn16Si4-C (EN 1982) and gunmetal CuSn5Zn5Pb5 (EN 1982), and spindle of AMETAL®.
Seals: EPDM.
Bonnet bolts: Chromed steel.
Handwheel: Size 3/4"-2" polyamide and TPE, size 2 1/2"-6" polyamide, size 8"-16" aluminium.


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.
CE-marking according to table:

Marking
STAF-SG
(Class 150)
CE
2" - 5"
CE 0409*
6" - 12"

*) Notified body.

Flanges:

Size 3/4" - 2": ISO 7005-2 and EN 1092-2. Bolt circle according to Class 150 ASME/ANSI B16.42.
Size 2 1/2" - 16": Class 150 ASME/ANSI B16.42 (~ PN 20 according to ISO 7005-2).

Face to face:

According to ISO 5752 series 1 and EN 558-1 series 1.

The products, texts, photographs, graphics and diagrams in this document may be subject to alteration by IMI Hydronic Engineering without prior notice or reasons being given. For the most up to date information about our products and specifications, please visit www.imi-hydronic.com.

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