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 (362 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, DN, PN, Material, Kvs, Δp and flow direction arrow.

Connection:

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

Articles

Size 1/2"-2"

Male thread – Separate connections with NPT threads or ANSI flanges – see Connections for size 1/2"-2".

Male threads 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"

Attention! Must be used on the outlet side.

With ANSI flange (extended)

Attention! Must be used on the outlet side.

According to ASME/ANSI B 16.42 Class 150.

d1
d2
D [in]
L1* [in]
EAN
Article No
G1
1/2"-13 UNC
3.50
1.85
3831112511828
52 759-915
G1
1/2"-13 UNC
3.88
1.85
3831112511842
52 759-920
G1 1/4
1/2"-13 UNC
4.25
2.44
3831112511859
52 759-925
G1 1/4
1/2"-13 UNC
4.62
2.44
3831112511880
52 759-932
G2
1/2"-13 UNC
5.00
2.83
3831112511903
52 759-940
G2
5/8"-11 UNC
6.00
2.83
3831112511507
52 759-950

*) Fitting length (from the gasket surface to the end of the connection).

Attention! Can be used on the inlet side only.

With ANSI flange

Attention! Can be used on the inlet side only.

According to ASME/ANSI B 16.42 Class 150.

d1
d2
D [in]
L1* [in]
EAN
Article No
G1
1/2"-13 UNC
3.50
0.394
3831112511811
52 759-815
G1
1/2"-13 UNC
3.88
0.787
3831112511835
52 759-820
G1 1/4
1/2"-13 UNC
4.25
0.197
3831112511866
52 759-825
G1 1/4
1/2"-13 UNC
4.62
0.591
3831112511873
52 759-832
G2
1/2"-13 UNC
5.00
0.197
3831112511897
52 759-840
G2
5/8"-11 UNC
6.00
0.787
3831112511491
52 759-850

Threads according to ANSI/ASME B1.20.1-1983.Swivelling nut

With female 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
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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DAF516_DN25_32_CAD

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Technical specifications

Installation instructions

Legal documents

Drawings

2D3D