Features & Benefits
Inline design
Inline flow allows high pressure drops without noise.
Adjustable set-point
Delivers desired differential pressure ensuring accurate balancing.
Measuring point
Simplifies the balancing procedure, increases its accuracy and enables troubleshooting.
Technical Information
Application:
Heating and cooling systems.
Installation in the return pipe.
Functions:
Differential pressure control
Pre-setting Δp over the load (ΔpL)
Measuring (ΔpL)
Dimensions:
DN 15-50
Pressure class:
PN 25
Max. differential pressure (ΔpV):
1600 kPa = 16 bar
Setting range:
Δp over the load is adjustable within:
5-30 kPa, 10-60 kPa, 10-100 kPa or 60-150 kPa.
Delivery setting:
Maximum value (30, 60, 100 resp. 150 kPa).
Temperature:
Max. working temperature:
- with measuring points: 120°C
- without measuring points: 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
Membrans and gaskets: EPDM
Adjustment ring: Ryton PPS
Surface treatment:
Electrophoretic painting.
Marking:
IMI TA, Size, PN, Material, Kvs/Cvs, Δp and flow direction arrow.
Connection:
External threads according to ISO 228.
Separate connections with NPT threads available.
Articles
Without measuring points (max. 150°C)
External thread according to ISO 228.
Separate connections with NPT threads – see "Connections for DN 15-50".
Included: Capillary pipe (Ø6) 1 200 mm, connection set (G1/2+G3/4) for capillary pipe to e.g. STAD and 1 capillary pipe connection R1/4 (R1/8 mounted on valve).
PN 25
DN | d | L | L1* | H1 | H2 | Kvs | Kg | EAN | Article No | |
5-30 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 57 | 4 | 1,5 | 3831112528468 | 52 752-720 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 70 | 12 | 2,6 | 3831112528659 | 52 752-725 | |
40/50 | G2 | 162 | 190 | 70 | 82 | 30 | 5,8 | 3831112528697 | 52 752-740 | |
10-60 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 57 | 4 | 1,5 | 3831112528451 | 52 754-620 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 70 | 12 | 2,6 | 3831112528642 | 52 754-625 | |
40/50 | G2 | 162 | 190 | 70 | 82 | 30 | 5,8 | 3831112528680 | 52 754-640 | |
10-100 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 57 | 4 | 1,5 | 3831112528444 | 52 760-320 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 70 | 12 | 2,6 | 3831112528635 | 52 760-325 | |
40/50 | G2 | 162 | 190 | 70 | 82 | 30 | 5,8 | 3831112528673 | 52 760-340 | |
60-150 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 57 | 4 | 1,5 | 3831112528475 | 52 760-920 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 70 | 12 | 2,6 | 3831112528666 | 52 760-925 | |
40/50 | G2 | 162 | 190 | 70 | 82 | 30 | 5,8 | 3831112528703 | 52 760-940 |
*) Length incl adjustment ring.
Kvs = m3/h at a pressure drop of 1 bar and fully open valve.
→ = Flow direction
With measuring points (max. 120°C)
External thread according to ISO 228.
Separate connections with NPT threads – see "Connections for DN 15-50".
Included: Capillary pipe (Ø6) 1 200 mm, connection set (G1/2+G3/4) for capillary pipe to e.g. STAD and 1 capillary pipe connection R1/4 (R1/8 mounted on valve).
PN 25
DN | d | L | L1* | H1 | H2 | Kvs | Kg | EAN | Article No | |
5-30 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 85 | 4 | 1,5 | 3831112507111 | 52 795-020 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 98 | 12 | 2,6 | 3831112507159 | 52 795-025 | |
40/50 | G2 | 162 | 190 | 70 | 110 | 30 | 5,8 | 3831112507197 | 52 795-040 | |
10-60 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 85 | 4 | 1,5 | 3831112507104 | 52 795-120 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 98 | 12 | 2,6 | 3831112507142 | 52 795-125 | |
40/50 | G2 | 162 | 190 | 70 | 110 | 30 | 5,8 | 3831112507180 | 52 795-140 | |
10-100 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 85 | 4 | 1,5 | 3831112507098 | 52 795-220 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 98 | 12 | 2,6 | 3831112507135 | 52 795-225 | |
40/50 | G2 | 162 | 190 | 70 | 110 | 30 | 5,8 | 3831112507173 | 52 795-240 | |
60-150 kPa | ||||||||||
15/20 | G1 | 106 | 116 | 41 | 85 | 4 | 1,5 | 3831112507128 | 52 795-320 | |
25/32 | G1 1/4 | 125 | 150 | 51 | 98 | 12 | 2,6 | 3831112507166 | 52 795-325 | |
40/50 | G2 | 162 | 190 | 70 | 110 | 30 | 5,8 | 3831112507203 | 52 795-340 |
Threads according to ANSI/ASME B1.20.1-1983.Swivelling nut
With internal thread NPT
Threads according to ANSI/ASME B1.20.1-1983.
Swivelling nut
d1 | d2 | L1* | EAN | Article No |
G1 1/4 | 1 NPT | 73 | 3831112533394 | 52 751-307 |
G1 1/4 | 1 1/4 NPT | 80 | 3831112533400 | 52 751-308 |
G2 | 1 1/2 NPT | 82 | 3831112533417 | 52 751-309 |
G2 | 2 NPT | 93 | 3831112533424 | 52 751-310 |
*) Fitting length (from the gasket surface to the end of the connection).
Other types of connections (ISO), see international version of DA 516.
Capillary pipe
Ø6 mm
1 pc included in DA 516.
L [m] | Ø | EAN | Article No |
1,2 | 6 mm | 3831112527157 | 52 759-215 |
Capillary pipe connection with shut-off
For connection of Ø6 mm capillary pipe to STAF/STAF-SG.
d | D | For DN | EAN | Article No |
G1/4 | 6 | 20-50 | 7318793999504 | 52 265-209 |
G3/8 | 6 | 65-400 | 7318793999405 | 52 265-208 |
Max 120°C (intermittent 150°C)AMETAL®/EPDM
Measuring point
Max 120°C (intermittent 150°C)
AMETAL®/EPDM
d | L | EAN | Article No |
M14x1 | 44 | 7318792813207 | 52 179-014 |
M14x1 | 103 | 7318793858108 | 52 179-015 |
For capillary pipe Ø6 mm with R1/4 and R1/8 connection.
Capillary pipe connection
For capillary pipe Ø6 mm with R1/4 and R1/8 connection.
1 pc R1/4 included in DA 516 (R1/8 mounted on valve)
DN | EAN | Article No | |
6 x R1/4 | 15-50 | 3831112527355 | 52 759-201 |
6 x R1/8 | 15-32 | 3831112533868 | 52 759-213 |
6 x R1/8 | 40-50 | 3831112533875 | 52 759-218 |
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 |
Must be used on STAD when connection of Ø6 mm capillary pipe.
Connection set STAD
Must be used on STAD when connection of Ø6 mm capillary pipe.
2 transition nipples (G1/2 and G3/4), 1 thrust nut (Ø6), 1 cone and 1 support bush are included in DA 516.
d | EAN | Article No |
G1/2 | 7318793850003 | 52 762-006 |
G3/4 | 7318793850102 | 52 762-106 |
Can be installed without draining of the system.AMETAL®/Stainless steel/EPDM
Measuring point, extension 60 mm
Can be installed without draining of the system.
AMETAL®/Stainless steel/EPDM
L | EAN | Article No |
60 | 7318792812804 | 52 179-006 |
For connection of Ø6 mm copper pipe while permitting simultaneous use of our balancing instrument.
Measuring point, two-way
For connection of Ø6 mm copper pipe while permitting simultaneous use of our balancing instrument.
D | H | EAN | Article No |
6 | 68 | 7318793848703 | 52 179-206 |
Brass/EPDM
Venting screw
Brass/EPDM
d | EAN | Article No |
M6 | 3831112527980 | 52 759-211 |