Features & Benefits
Inline design
Inline flow allows high pressure drops without noise.
Integrated throttle for flow limitation
No need for additional flow limitation valve.
Adjustable set-point
Delivers desired differential pressure ensuring accurate balancing.
Technical Information
Application:
Central heating, cooling systems and in district heating substations.
Functions:
Differential pressure control and flow limitation.
Closes at increasing Δp.
Dimensions:
DN 15-125
Pressure class:
PN 25
DN 100-125: PN 16 and PN 25
Max. differential pressure (ΔpV):
1600 kPa = 16 bar
Setting range:
Differential pressure adjustable 5-30 kPa, 10-60 kPa, 10-100 kPa and 60-150 kPa.
Temperature:
Max. working temperature: 150°C
Min. working temperature: -10°C
Media:
Water or neutral fluids, water-glycol mixtures (0-57%).
Material:
Valve body: Ductile iron EN-GJS-400-15
Diaphragm and seals: EPDM
Surface treatment:
Electrophoretic painting.
Marking:
IMI TA, DN, PN and flow direction arrow.
Threads:
DN 15-50: According to ISO 228.
Flanges:
DN 15-50 (optional): According to EN-1092-2:1997, type 16.
DN 65-125: According to EN-1092-2:1997, type 21.
Articles
1200 mm capillary pipe (Ø6) included.
DN 15-50
1200 mm capillary pipe (Ø6) included.

PN 25
DN | d | D | L | H1 | H2 | Kvs | Kg | EAN | Article No | |
5-30 kPa | ||||||||||
15/20 | G1 | 97 | 136 | 45 | 52 | 2,5 | 1,4 | 3831112502901 | 52 763-720 | |
25/32 | G1 1/4 | 112 | 186 | 55 | 57 | 6 | 2,4 | 3831112502871 | 52 763-725 | |
40/50 | G2 | 146 | 238 | 75 | 71 | 13 | 4,4 | 3831112501287 | 52 763-740 | |
10-60 kPa | ||||||||||
15/20 | G1 | 97 | 136 | 45 | 52 | 2,5 | 1,4 | 3831112502925 | 52 761-220 | |
23/32 | G1 1/4 | 112 | 186 | 55 | 57 | 6 | 2,4 | 3831112502888 | 52 761-225 | |
40/50 | G2 | 146 | 238 | 75 | 71 | 13 | 4,4 | 3831112501461 | 52 761-240 | |
10-100 kPa | ||||||||||
15/20 | G1 | 97 | 136 | 45 | 52 | 2,5 | 1,4 | 3831112505308 | 52 760-220 | |
25/32 | G1 1/4 | 112 | 186 | 55 | 57 | 6 | 2,4 | 3831112505315 | 52 760-225 | |
40/50 | G2 | 146 | 238 | 75 | 71 | 13 | 4,4 | 3831112505445 | 52 760-240 | |
60-150 kPa | ||||||||||
15/20 | G1 | 97 | 136 | 45 | 52 | 2,5 | 1,4 | 3831112502918 | 52 762-220 | |
25/32 | G1 1/4 | 112 | 186 | 55 | 57 | 6 | 2,4 | 3831112505001 | 52 762-225 | |
40/50 | G2 | 146 | 238 | 75 | 71 | 13 | 4,4 | 3831112500914 | 52 762-240 |
→ = Flow direction
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
1500 mm capillary pipe (Ø6) included.
DN 65-125
1500 mm capillary pipe (Ø6) included.

PN 25 (DN 65 and 80 also fit PN 16 flanges)
DN | D | L | H1 | H2 | Kvs | Kg | EAN | Article No | |
5-30 kPa | |||||||||
65 | 220 | 290 | 180 | 93 | 45 | 24 | 3831112500051 | 52 763-765 | |
80 | 220 | 310 | 183 | 100 | 50 | 26 | 3831112500112 | 52 763-780 | |
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508200 | 52 763-790 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508286 | 52 763-791 | |
10-60 kPa | |||||||||
65 | 220 | 290 | 180 | 93 | 45 | 24 | 3831112500068 | 52 761-265 | |
80 | 220 | 310 | 183 | 100 | 50 | 26 | 3831112500143 | 52 761-280 | |
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508217 | 52 761-290 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508293 | 52 761-291 | |
10-100 kPa | |||||||||
65 | 220 | 290 | 180 | 93 | 45 | 24 | 3831112526921 | 52 760-265 | |
80 | 220 | 310 | 183 | 100 | 50 | 26 | 3831112500075 | 52 760-280 | |
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508224 | 52 760-290 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508309 | 52 760-291 | |
60-150 kPa | |||||||||
65 | 220 | 290 | 180 | 93 | 45 | 24 | 3831112500020 | 52 762-265 | |
80 | 220 | 310 | 183 | 100 | 50 | 26 | 3831112500082 | 52 762-280 | |
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508231 | 52 762-290 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508316 | 52 762-291 |
PN 16
DN | D | L | H1 | H2 | Kvs | Kg | EAN | Article No | |
5-30 kPa | |||||||||
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508163 | 52 763-690 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508248 | 52 763-691 | |
10-60 kPa | |||||||||
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508170 | 52 761-690 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508255 | 52 761-691 | |
10-100 kPa | |||||||||
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508187 | 52 760-690 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508262 | 52 760-691 | |
60-150 kPa | |||||||||
100 | 320 | 350 | 174 | 118 | 75 | 58 | 3831112508194 | 52 762-690 | |
125 | 320 | 400 | 175 | 135 | 105 | 62 | 3831112508279 | 52 762-691 |
→ = Flow direction
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
Swivelling nut
For welding
Swivelling nut

d1 | D | L1* | EAN | Article No |
G1 | 20,8 | 37 | 3831112500945 | 52 759-315 |
G1 | 26,3 | 42 | 3831112500952 | 52 759-320 |
G1 1/4 | 33,2 | 47 | 3831112500969 | 52 759-325 |
G1 1/4 | 40,9 | 47 | 3831112500976 | 52 759-332 |
G2 | 48,0 | 47 | 3831112501140 | 52 759-340 |
G2 | 60,0 | 52 | 3831112501294 | 52 759-350 |
Threads according to ISO 7Swivelling nut
With male thread
Threads according to ISO 7
Swivelling nut

d1 | d2 | L1* | EAN | Article No |
G1 | R1/2 | 34 | 3831112500983 | 52 759-115 |
G1 | R3/4 | 40 | 3831112500990 | 52 759-120 |
G1 1/4 | R1 | 40 | 3831112501003 | 52 759-125 |
G1 1/4 | R1 1/4 | 45 | 3831112501010 | 52 759-132 |
G2 | R1 1/2 | 45 | 3831112503342 | 52 759-140 |
G2 | R2 | 50 | 3831112503472 | 52 759-150 |
Attention! Must be used on the outlet side.
With flange (extended)
Attention! Must be used on the outlet side.
Flange according to EN-1092-2:1997, type 16.

d1 | d2 | D | L1* | EAN | Article No |
G1 | M12 | 95 | 47 | 3831112501157 | 52 759-615 |
G1 | M12 | 105 | 47 | 3831112500136 | 52 759-620 |
G1 1/4 | M12 | 115 | 62 | 3831112503533 | 52 759-625 |
G1 1/4 | M16 | 140 | 62 | 3831112526129 | 52 759-632 |
G2 | M16 | 150 | 72 | 3831112505025 | 52 759-640 |
G2 | M16 | 165 | 72 | 3831112503892 | 52 759-650 |
*) Fitting length (from the gasket surface to the end of the connection).
Threads according to ISO 228.
With female thread
Threads according to ISO 228.
Swivelling nut

d1 | d2 | L1* | EAN | Article No |
G1 | G1/2 | 26 | 3831112501027 | 52 759-015 |
G1 | G3/4 | 32 | 3831112501034 | 52 759-020 |
G1 1/4 | G1 | 47 | 3831112501041 | 52 759-025 |
G1 1/4 | G1 1/4 | 52 | 3831112501058 | 52 759-032 |
G2 | G1 1/2 | 52 | 3831112503489 | 52 759-040 |
G2 | G2 | 64,5 | 3831112503205 | 52 759-050 |
Attention! Can be used on the inlet side only.
With flange
Attention! Can be used on the inlet side only.
Flange according to EN-1092-2:1997, type 16.

d1 | d2 | D | L1* | EAN | Article No |
G1 | M12 | 95 | 10 | 3831112501065 | 52 759-515 |
G1 | M12 | 105 | 20 | 3831112501072 | 52 759-520 |
G1 1/4 | M12 | 115 | 5 | 3831112504318 | 52 759-525 |
G1 1/4 | M16 | 140 | 15 | 3831112501096 | 52 759-532 |
G2 | M16 | 150 | 5 | 3831112504325 | 52 759-540 |
G2 | M16 | 165 | 20 | 3831112501317 | 52 759-550 |
Threads according to ISO 7-1Swivelling nut
With female thread Rc
Threads according to ISO 7-1
Swivelling nut

d1 | d2 | L1* | EAN | Article No |
G1 | Rc1/2 | 26 | 3831112527454 | 52 751-301 |
G1 | Rc3/4 | 32 | 3831112527461 | 52 751-302 |
G1 1/4 | Rc1 | 47 | 3831112527478 | 52 751-303 |
G1 1/4 | Rc1 1/4 | 52 | 3831112527485 | 52 751-304 |
G2 | Rc1 1/2 | 52 | 3831112527492 | 52 751-305 |
G2 | Rc2 | 64,5 | 3831112527508 | 52 751-306 |
Suitable when insulation is used.Stainless steel/EPDM/Brass.
Venting extension
Suitable when insulation is used.
Stainless steel/EPDM/Brass.

d | D | L | EAN | Article No |
M6 | 12 | 70 | 3831112531727 | 52 759-220 |
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