Features & Benefits

Inline design

Inline flow allows high pressure drops without noise.

Adjustable set-point

Delivers desired differential pressure ensuring accurate balancing.

Technical description

Application:

Heating and cooling systems.
Installation in supply pipe.

Functions:

Differential pressure control
Pre-setting Δp over the load (ΔpL)

Dimensions:

1/2" - 5"

Pressure class:

1/2"-2": PN 25 (363 psi)
2 1/2"-5": Class 150

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:
Size 1/2"-2": Maximum value (4.35, 8.7, 14.5, 22 psi).
Size 2 1/2"-5": Midway min./max. value (~2.61, ~1.02, ~1.45, ~15.2 psi).

Temperature:

Max. working temperature: 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
Diaphragms and gaskets: EPDM
Adjustment ring: Size 1/2"-2" Ryton PPS, size 2 1/2"-5" R St 37-2 steel.

Surface treatment:

Electrophoretic painting.

Marking:

IMI TA, Size, PN, Material, Cvs, Δp and flow direction arrow.

Connection:

Size 1/2" - 2": External threads according to ISO 228. (Separate connections with NPT threads available.)
Size 2 1/2" - 5": Flanges according to ASME/ANSI B16.42 Class 150.

Articles

Size 1/2"-2"

External threads – Separate connections with NPT threads – see Connections for size 1/2"-2".

External thread according to ISO 228.

Included: Capillary pipe (Ø6 mm) 2 x 4 ft, connection set (G1/2+G3/4) for capillary pipe to e.g. STAD and 2 capillary pipe connections R1/4 (R1/8 mounted on valve).

Size
d
L
L1*
H1
H2
Cvs
lb.
EAN
Article No
1-4 psi
1/2" / 3/4"
G1
4,2
4,6
1,6
3,1
4,6
3,3
3831112505476
52 763-120
1" / 1 1/4"
G1 1/4
4,9
5,9
2,0
3,3
13,9
5,7
3831112503953
52 763-125
1 1/2" / 2"
G2
6,4
7,5
2,8
4,0
34,7
12,8
3831112504042
52 763-140
4-9 psi
1/2" / 3/4"
G1
4,2
4,6
1,6
3,1
4,6
3,3
3831112505377
52 761-120
1" / 1 1/4"
G1 1/4
4,9
5,9
2,0
3,3
13,9
5,7
3831112504134
52 761-125
1 1/2" / 2"
G2
6,4
7,5
2,8
4,0
34,7
12,8
3831112504196
52 761-140
4-15 psi
1/2" / 3/4"
G1
4,2
4,6
1,6
3,1
4,6
3,3
3831112504189
52 760-120
1" / 1 1/4"
G1 1/4
4,9
5,9
2,0
3,3
13,9
5,7
3831112504004
52 760-125
1 1/2" / 2"
G2
6,4
7,5
2,8
4,0
34,7
12,8
3831112504103
52 760-140
9-21 psi
1/2" / 3/4"
G1
4,2
4,6
1,6
3,1
4,6
3,3
3831112504233
52 762-120
1" / 1 1/4"
G1 1/4
4,9
5,9
2,0
3,3
13,9
5,7
3831112504141
52 762-125
1 1/2" / 2"
G2
6,4
7,5
2,8
4,0
34,7
12,8
3831112504158
52 762-140

*) Length incl adjustment ring.

2 1/2" - 5"

Flanges – Do not need any separate connections.

Flanges according to ASME/ANSI B16.42 Class 150.

Included: Capillary pipe (Ø6 mm) 2 x 5 ft. and 2 capillary pipe connections R1/4 (M14x1 mounted on valve).

Size
D
L
Cvs
lb.
EAN
Article No
1-4 psi
2 1/2"
8,3
6,3
69,4
39,7
3831112529885
52 768-665
3"
8,3
6,3
69,4
39,7
3831112529922
52 768-680
4"
12,6
10
173,4
127,9
3831112529809
52 768-690
5"
12,6
10
173,4
127,9
3831112529847
52 768-691
4-9 psi
2 1/2"
8,3
6,3
69,4
39,7
3831112529878
52 768-765
3"
8,3
6,3
69,4
39,7
3831112529915
52 768-780
4"
12,6
10
173,4
127,9
3831112529793
52 768-790
5"
12,6
10
173,4
127,9
3831112529830
52 768-791
4-15 psi
2 1/2"
8,3
6,3
69,4
39,7
3831112529861
52 768-865
3"
8,3
6,3
69,4
39,7
3831112529908
52 768-880
4"
12,6
10
173,4
127,9
3831112529786
52 768-890
5"
12,6
10
173,4
127,9
3831112529823
52 768-891
9-21 psi
2 1/2"
8,3
6,3
69,4
39,7
3831112529892
52 768-965
3"
8,3
6,3
69,4
39,7
3831112529939
52 768-980
4"
12,6
10
173,4
127,9
3831112529816
52 768-990
5"
12,6
10
173,4
127,9
3831112529854
52 768-991


Cvs = gpm at a pressure drop of 1 psi and fully open valve.

→ = Flow direction

Connections for size 1/2"-2"

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).

Accessories

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

Capillary pipe

Ø6 mm

2 pcs included in DAF 516.

L [ft]
Ø
Valve size
EAN
Article No
4
6 mm
1/2" - 2"
3831112527157
52 759-215
5
6 mm
2 1/2" - 5"
3831112527164
52 759-265

Brass/EPDM

Venting screw

Brass/EPDM

d
EAN
Article No
M6
3831112527980
52 759-211

For capillary pipe Ø6 mm with R1/4, R1/8 and M14 connection.

Capillary pipe connection

For capillary pipe Ø6 mm with R1/4, R1/8 and M14 connection.

1/2” - 2”: 2 pcs R1/4 included in DAF 516 (2 pcs R1/8 mounted on valve).
2 1/2” - 5”: 2 pcs R1/4 included in DAF 516 (2 pcs M14x1 mounted on valve).

Valve size
EAN
Article No
6 mm x R1/4
2 1/2" - 5"
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
6 mm x M14x1
2 1/2" - 5"
3831112535145
52 759-214

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 (Ø6) and 1 support bush are included in DAF 516, DN 15-50 (sizes 1/2" - 2").

d
EAN
Article No
G1/2
7318793850003
52 762-006
G3/4
7318793850102
52 762-106

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

DAF516_DN80_CAD

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Technical specifications

Installation instructions

Legal documents

Drawings

2D3D