DA 516 – NPT threads
Differential pressure controller with adjustable set-point – size 1/2" - 2"
This compact differential pressure controller for heating and cooling systems is particularly effective in situations requiring high temperatures and/or pressure drop. DA 516 can be used both on the primary and secondary side in district heating and comfort cooling systems. Rust protection is assured thanks to the electrophoretic painted ductile iron body.
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:
1/2" - 2"
Pressure class:
PN 25 (363 psi)
Max. differential pressure (ΔpV):
230 psi
Setting range:
Δp over the load is adjustable within:
0.73-4.35 psi, 1.45-8.7 psi, 1.45-14.5 psi, 8.7-22 psi.
Delivery setting:
Maximum value (4.35, 8.7, 14.5, 22 psi).
Temperature:
Max. working temperature:
- with measuring points: 248°F
- without measuring points: 302°F
Min. working temperature: 14°F
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, Cvs, Δp and flow direction arrow.
Connection:
External threads according to ISO 228.
Separate connections with NPT threads available.
Articles
Without measuring points (max. 302 °F)
External thread according to ISO 228.
Separate connections with NPT threads – see Connections for size 1/2"-2".
Included: Capillary pipe (Ø6 mm) 4 ft, 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).
Size | d | L | L1* | H1 | H2 | Cvs | Weight [lb] | EAN | Article No | |
1-4 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 2.2 | 4.6 | 3.3 | 3831112528468 | 52 752-720 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 2.8 | 13.9 | 5.7 | 3831112528659 | 52 752-725 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 3.2 | 34.7 | 12.8 | 3831112528697 | 52 752-740 | |
4-9 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 2.2 | 4.6 | 3.3 | 3831112528451 | 52 754-620 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 2.8 | 13.9 | 5.7 | 3831112528642 | 52 754-625 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 3.2 | 34.7 | 12.8 | 3831112528680 | 52 754-640 | |
4-15 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 2.2 | 4.6 | 3.3 | 3831112528444 | 52 760-320 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 2.8 | 13.9 | 5.7 | 3831112528635 | 52 760-325 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 3.2 | 34.7 | 12.8 | 3831112528673 | 52 760-340 | |
9-21 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 2.2 | 4.6 | 3.3 | 3831112528475 | 52 760-920 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 2.8 | 13.9 | 5.7 | 3831112528666 | 52 760-925 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 3.2 | 34.7 | 12.8 | 3831112528703 | 52 760-940 | |
*) Length incl adjustment ring.
Cvs = gpm at a pressure drop of 1 psi and fully open valve.
→ = Flow direction
With measuring points (max. 248 °F)
External thread according to ISO 228.
Separate connections with NPT threads – see Connections for size 1/2"-2".
Included: Capillary pipe (Ø6 mm) 4 ft, 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).
Size | d | L | L1* | H1 | H2 | Cvs | Weight [lb] | EAN | Article No | |
1-4 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 3.3 | 4.6 | 3.3 | 3831112507111 | 52 795-020 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 3.9 | 13.9 | 5.7 | 3831112507159 | 52 795-025 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 4.3 | 34.7 | 12.8 | 3831112507197 | 52 795-040 | |
4-9 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 3.3 | 4.6 | 3.3 | 3831112507104 | 52 795-120 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 3.9 | 13.9 | 5.7 | 3831112507142 | 52 795-125 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 4.3 | 34.7 | 12.8 | 3831112507180 | 52 795-140 | |
4-15 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 3.3 | 4.6 | 3.3 | 3831112507098 | 52 795-220 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 3.9 | 13.9 | 5.7 | 3831112507135 | 52 795-225 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 4.3 | 34.7 | 12.8 | 3831112507173 | 52 795-240 | |
9-21 psi | ||||||||||
1/2" / 3/4" | G1 | 4.2 | 4.6 | 1.6 | 3.3 | 4.6 | 3.3 | 3831112507128 | 52 795-320 | |
1" / 1 1/4" | G1 1/4 | 4.9 | 5.9 | 2.0 | 3.9 | 13.9 | 5.7 | 3831112507166 | 52 795-325 | |
1 1/2" / 2" | G2 | 6.4 | 7.5 | 2.8 | 4.3 | 34.7 | 12.8 | 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* [in] | EAN | Article No |
G1 1/4 | 1 NPT | 2.87 | 3831112533394 | 52 751-307 |
G1 1/4 | 1 1/4 NPT | 3.15 | 3831112533400 | 52 751-308 |
G2 | 1 1/2 NPT | 3.23 | 3831112533417 | 52 751-309 |
G2 | 2 NPT | 3.66 | 3831112533424 | 52 751-310 |
*) Fitting length (from the gasket surface to the end of the connection).
Capillary pipe
Ø6 mm
1 pc included in DA 516.
L [ft] | Ø | EAN | Article No |
4 | 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 | Valve size | EAN | Article No |
G1/4 | 6 mm | 3/4" - 2" | 7318793999504 | 52 265-209 |
G3/8 | 6 mm | 2 1/2" - 16" | 7318793999405 | 52 265-208 |
Max 248°F (intermittent 302°F)AMETAL®/EPDM
Measuring point
Max 248°F (intermittent 302°F)
AMETAL®/EPDM
d | L [in] | EAN | Article No |
M14x1 | 1.7 | 7318792813207 | 52 179-014 |
M14x1 | 4.1 | 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)
Valve size | EAN | Article No | |
6 mm x R1/4 | 1/2" - 2" | 3831112527355 | 52 759-201 |
6 mm x R1/8 | 1/2" - 1 1/4" | 3831112533868 | 52 759-213 |
6 mm x R1/8 | 1 1/2" - 2" | 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 [in] | L [in] | EAN | Article No |
M6 | 0.47 | 2.76 | 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 2.36 in.
Can be installed without draining of the system.
AMETAL®/Stainless steel/EPDM
L [in] | EAN | Article No |
2.36 | 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 [in] | EAN | Article No |
6 mm | 2.68 | 7318793848703 | 52 179-206 |
Brass/EPDM
Venting screw
Brass/EPDM
d | EAN | Article No |
M6 | 3831112527980 | 52 759-211 |
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