Features & Benefits
Pressure relief cone
Ensures accurate differential pressure control.
Adjustable set-point and shut-off function
Delivers desired differential pressure ensuring accurate balancing. Shut-off function makes maintenance easy and straightforward.
Measuring points with drain option
Simplifies the balancing procedure, and increases its accuracy.
Technical Information
Application:
Heating (not steam) and cooling systems.
Functions:
Differential pressure control
Adjustable Δp
Measuring point
Shut-off
Draining (accessory)
Dimensions:
1/2" - 2"
Pressure class:
PN 16 (230 psi)
Max. differential pressure (ΔpV):
84 ft H2O / 37 psi
Setting range:
Size 1/2" - 1":
3.34*-20.1 ft H2O / 1.45*-8.70 psi
Size 1 1/4" - 2":
6.69*-26.8 ft H2O / 2.90*-11.6 psi
*) Delivery setting
Temperature:
Max. working temperature: 248°F
Min. working temperature: -4°F
Media:
Water or neutral fluids, water-glycol mixtures (0-57%).
Material:
Valve body: AMETAL®
Bonnet: AMETAL®
Cone: AMETAL®
Spindles: AMETAL®
O-rings: EPDM rubber
Membrane: HNBR rubber
Spring: Stainless steel
Spring support: AMETAL® and reinforced PPS
Handwheel: Polyamide
AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.
Marking:
Body: IMI or TA, PN 16/150, DN, inch size and flow direction arrow.
Bonnet: STAP, ΔpL range in ft H2O and psi.
Connection:
Pipe threads NPT according to ANSI/ASME B1.20.1-1983.
Complete thread according to ANSI B16.15-1985.
Articles
3.28 ft (1 m) capillary pipe and transition nipples UNS 1 1/16"x11.5 are included.
Female NPT threads
3.28 ft (1 m) capillary pipe and transition nipples UNS 1 1/16"x11.5 are included.

Size | D | L [in] | H [in] | B [in] | Cvm | qmax [gpm] | lb | EAN | Article No |
1.45-8.70 psi | |||||||||
1/2" | 1/2-14 NPT | 3.3 | 5.4 | 2.8 | 1.62 | 4.4 | 2.43 | 7318793957603 | 52 266-015 |
3/4" | 3/4-14 NPT | 3.6 | 5.5 | 2.8 | 3.58 | 9.69 | 2.65 | 7318793957702 | 52 266-020 |
1" | 1-11.5 NPT | 3.7 | 5.6 | 2.8 | 6.36 | 17.2 | 2.87 | 7318793957801 | 52 266-025 |
2.90-11.6 psi | |||||||||
1 1/4" | 1 1/4-11.5 NPT | 5.2 | 7.0 | 4.3 | 9.83 | 26.4 | 5.73 | 7318793957900 | 52 266-032 |
1 1/2" | 1 1/2-11.5 NPT | 5.3 | 7.1 | 4.3 | 14.8 | 40.1 | 6.39 | 7318793958006 | 52 266-040 |
2" | 2-11.5 NPT | 5.4 | 7.4 | 4.3 | 28.21 | 76.2 | 7.72 | 7318793958105 | 52 266-050 |
→ = Flow direction
Kvm = m3/h at a pressure drop of 1 bar and opening corresponding to the p-band.
For heating/cooling
Insulation STAP
For heating/cooling

For size | L [in] | H [in] | B [in] | EAN | Article No |
1/2" - 1" | 5.71 | 6.77 | 4.57 | 7318793658906 | 52 265-225 |
1 1/4" - 2" | 7.52 | 9.21 | 6.06 | 7318793659002 | 52 265-250 |
Draining kit STAP

d | EAN | Article No |
G1/2 | 7318793660404 | 52 265-201 |
G3/4 | 7318793660503 | 52 265-202 |
UNS 1 1/16"x11.5 | 7318793959102 | 52 266-202 |
For connection of capillary pipe while permitting simultaneous use of our balancing instrument.
Measuring point, two-way
For connection of capillary pipe while permitting simultaneous use of our balancing instrument.

EAN | Article No |
7318793784100 | 52 179-200 |
Measuring point STAP

EAN | Article No |
7318793660602 | 52 265-205 |
Complete with connections for 6 mm pipe.
Extension kit for capillary pipe
Complete with connections for 6 mm pipe.

EAN | Article No | |
6 mm | 7318793781505 | 52 265-212 |
For use on STAD or STS. Replacement of existing draining.
Connection sleeve kit for capillary pipe
For use on STAD or STS. Replacement of existing draining.

EAN | Article No |
7318794027800 | 52 265-216 |
Venting
Plug
Venting

EAN | Article No |
7318793661609 | 52 265-302 |
Capillary pipe

L | EAN | Article No |
3.28 ft (1 m) | 7318793661500 | 52 265-301 |
For capillary pipe with G1/16 connection.
Transition nipple
For capillary pipe with G1/16 connection.

d | EAN | Article No |
UNS 1 1/16x11.5 | 7318793959300 | 52 179-987 |
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