Features & Benefits
Self-sealing measuring points
For simple, accurate balancing.
Handwheel
Equipped with a digital read-out, the handwheel ensures accurate and straightforward balancing.
Venturi orifice
For more accurate flow readings than traditional orifice plates and low permanent pressure loss.
Technical Information
Applications:
Heating and cooling systems.
Tap water systems.
Functions:
Balancing
Pre-setting
Measuring
Shut-off
Dimensions:
DN 15-50
Pressure class:
PN 20
Temperature:
Max. working temperature: 120°C
Min. working temperature: -20°C
Media:
Water or neutral fluids, water-glycol mixtures (0-57%).
Material:
Valve body and bonnet: AMETAL®
Sealing (body/bonnet): EPDM O-ring
Valve plug: AMETAL®
Seat seal: EPDM O-ring
Spindle: AMETAL®
Slip washer: PTFE
Spindle seal: EPDM O-ring
Spring: Stainless steel
Handwheel: Polyamide and TPE
Measuring points: AMETAL®
Sealings: EPDM
Caps: Polyamide and TPE
AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.
Marking:
Body: TA, PN 20, DN and inch size.
Handwheel: Valve type and DN.
Marking ring on measuring point:
Normal flow (MD 71): Black, 120°C, Kvsignal
Low flow (MD 72): White, 120°C, Kvsignal
Ultra low flow (MD 73): Blue, 120°C, Kvsignal
Connection:
Female thread according to ISO 228.
Thread length according to ISO 7/1.
Articles
Thread according to ISO 228. Thread length according to ISO 7/1.
With female threads
Thread according to ISO 228. Thread length according to ISO 7/1.
DN | D* | L | H | Kvmax | Kvsignal | l/h** | l/s** | Kg | EAN | Article No |
Normal flow (MD 71) | ||||||||||
15* | G1/2 | 113 | 100 | 1.75 | 1.25 | 125-395 | 0.035-0.110 | 0.58 | 7318793818607 | 52 572-015 |
20* | G3/4 | 122 | 100 | 3.98 | 2.70 | 270-854 | 0.075-0.237 | 0.69 | 7318793818904 | 52 572-020 |
25 | G1 | 137 | 105 | 6.46 | 5.00 | 500-1581 | 0.139-0.439 | 0.92 | 7318793819000 | 52 572-025 |
32 | G1 1/4 | 156 | 110 | 11.43 | 10.4 | 1040-3289 | 0.289-0.914 | 1.3 | 7318793819109 | 52 572-032 |
40 | G1 1/2 | 168 | 120 | 15.8 | 15.6 | 1560-4933 | 0.433-1.370 | 1.8 | 7318793819208 | 52 572-040 |
50 | G2 | 206 | 120 | 29.3 | 29.7 | 2970-9392 | 0.825-2.609 | 2.9 | 7318793819307 | 52 572-050 |
Low flow (MD 72) | ||||||||||
15* | G1/2 | 113 | 100 | 0.821 | 0.540 | 54-171 | 0.015-0.047 | 0.58 | 7318793818706 | 52 572-115 |
Ultra low flow (MD 73) | ||||||||||
15* | G1/2 | 113 | 100 | 0.319 | 0.208 | 21-66 | 0.006-0.018 | 0.58 | 7318793818805 | 52 572-215 |
→ = Flow direction
*) Can be connected to smooth pipes by KOMBI compression coupling. If using pipes smaller than valve size – contact IMI Hydronic Engineering. For further information of KOMBI – see catalogue leaflet KOMBI.
**) Recommended flow rate. Min. flow rate is based upon a measured pressure drop of 1 kPa.
Kvmax is the Kv value for the total valve.
Kvsignal is the Kv value used for flow measuring.