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Equipped with a digital read-out, the handwheel ensures accurate and straightforward balancing.
For simple, accurate balancing.
For easy maintenance.
Heating and cooling systems.
BalancingPre-settingMeasuring Shut-off (The balancing cone for valve DN 65-400 is pressure released).
STAF: DN 65-150STAF-SG: DN 20-400
STAF: PN 16STAF-SG: PN 16 and PN 25 (see each product)
Max. working temperature: 120°CMin. working temperature: -10°C
Water or neutral fluids, water-glycol mixtures (0-57%).
Body, STAF: Cast iron EN-GJL-250 (GG 25). Body, STAF-SG: Ductile iron EN-GJS-400-15. DN 20-150: Bonnet, cone and spindle of AMETAL®.DN 200-300: Bonnet and cone of ductile iron EN-GJS-400-15, and spindle of AMETAL®. DN 350-400:CE marked products: Bonnet of ductile iron EN-GJS-400-15, cone of ductile iron EN-GJS-400-15 and gunmetal CuSn5Zn5Pb5 (EN 1982), and spindle of AMETAL®.Not CE marked products: 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®. Cone DN 65-400: PTFE coated.Seals: EPDM. Slip washer: PTFE.Bonnet bolts: Surface treated steel. Measuring points: AMETAL® and EPDM.Handwheel: DN 20-50 polyamide and TPE, DN 65-150 polyamide, DN 200-400 aluminium.
AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.
DN 20-200: Epoxy painting. DN 250-400: Duasolid painting.
Body: TA, PN, DN, flow direction arrow, material and casting date (year, month, day).CE-marking:CE: STAF (PN 16) DN 65-150, STAF-SG (PN 16) DN 200, STAF-SG (PN 25) DN 50-125.CE 0409*: STAF-SG (PN 16) DN 250-400, STAF-SG (PN 25) DN 150-400.*) Notified body.
ISO 5752 series 1, BS 2080 and EN 558-1 series 1.
STAF – Cast iron
A flanged, cast iron (STAF) and ductile iron (STAF-SG) balancing valve that delivers accurate hydronic performance in an impressive range of applications. The STAF/STAF-SG is ideal for use mainly on the secondary side in heating and cooling systems.
→ = Flow direction
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
STAF-SG – Ductile iron
Measuring points on body
*) NOTE: Not allowed to be installed in EU or EFTA countries.
(not for 52 179-000/-601)Can be installed without draining of the system.AMETAL®/Stainless steel/EPDM
For older STAD and STAFMax 150°CAMETAL®/EPDM
For locking of setting.
For heating/coolingCFC-free polyurethane. Covered with grey PVC.See catalogue leaflet "Prefab insulations" for complete details.
Please use the below link to browse and download IMI Hydronic Engineering BIM files for Revit. It requires a free registration.
Insulation caps for heating and cooling system
Flow measuring orifice
Balancing valve DN 10-50, PN 25