API · ASME · DIN · EN standard industrial valves
Balancing Valves
Double-regulating valves with a calibrated handwheel and memory stop for static hydronic balancing in HVAC and water networks.
Last updated: 2026-10
Family specifications
| size range | DN15–DN600 (1/2"–24") depending on pattern |
|---|---|
| pressure class | PN10–PN25 typical, ASME Class 150 options (higher on request) |
| temperature range | −10 °C to +120 °C with EPDM, higher with alternative seals and trims |
| end connections | Flanged RF/RTJ (ASME B16.5 / EN 1092-1), Threaded NPT/BSP for small sizes, Grooved ends (AWWA C606), Socket- or butt-weld on request |
| features | Handwheel with calibrated scale and memory stop, Dual test ports for pressure and temperature, Lockshield for tamper resistance |
| design standards | BS 7350, ASME B16.34, ISO 5208 |
| testing standards | ISO 5208 / MSS SP-61 hydrostatic shell and seat tests |
| body materials | Bronze, DZR Copper Alloy, Stainless Steel |
| flanged ci size range | DN40–DN300 (PN16, cast iron body) |
| gear pattern size range | DN50–DN350 (PN16, double regulating and shut-off) |
| flow control size range | DN15–DN800 |
| flow control pressure range | 1.6–6.3 MPa |
| threaded pattern temp range | −20 °C to +80 °C |
| flanged pattern temp range | −10 °C to +140 °C |
| water service temp range | −10 °C to +110 °C (water) |
| shell test pressure | 24 bar (shell, water) |
| seat test pressure | 17.6 bar (seat, water) |
| flange standards | EN 1092-2 |
| face to face | EN 558, series 1 |
| ci body material | Cast Iron EN-GJL-250 |
| brass body spec | Brass body and bonnet (CuZn40Pb3), EPDM membrane |
| stainless stem spec | Stainless steel stem (ASTM A276, Gr. SS 410) |
| brass stem spec | Brass stem (CuZn40Pb3) |
| seat materials | EPDM seating |
| gasket materials | EPDM |
| handwheel materials | Polyamide PA6.6; ABS on small threaded sizes |
| suitable medium | Hot water; glycol–water mix (max 50% glycol) |
| operation | Handwheel operation, multiturn |
Ordering & documentation
Documents
Ask for the documentation set with the inquiry — typical items (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
Send the medium, temperature, pressure, size and connection for a quotation-ready inquiry. Lead time, MOQ and price are confirmed at quotation, together with the documents to be supplied with the order.
Sample & supply
Supply terms, order quantities and lead time are agreed per order — state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, and keep end-face protectors on until installation; storage limits and shipping arrangements for the selected materials are confirmed at quotation.
Frequently asked questions
What standards govern the design and testing of balancing valves?
The published specification for this family lists BS 7350, ASME B16.34, ISO 5208 as the design standards. Testing follows ISO 5208 / MSS SP-61 hydrostatic shell and seat tests.
What sizes and pressure ratings are available for balancing valves?
The published size range is DN15–DN600 (1/2"–24") depending on pattern, and the published pressure ratings are PN10–PN25 typical, ASME Class 150 options (higher on request). Availability of a specific size and rating is confirmed at quotation.
What materials are balancing valves available in?
The published specification lists body materials: Bronze, DZR Copper Alloy, Stainless Steel. Material availability for a specific size and rating is confirmed at quotation.
What working temperature range do balancing valves cover?
The published working temperature range is −10 °C to +120 °C with EPDM, higher with alternative seals and trims. For a medium at the edge of the range, confirm the suitability of the selected seat and body materials at quotation.
What end connections do balancing valves support?
The published specification lists Flanged RF/RTJ (ASME B16.5 / EN 1092-1), Threaded NPT/BSP for small sizes, Grooved ends (AWWA C606), Socket- or butt-weld on request as the available end connections. The connection for a specific size is confirmed at quotation.
What should a quotation inquiry for balancing valves include?
The governing standard and class, nominal size, body and seat materials, the service medium with temperature, and the destination — anything missing is confirmed during quotation.
Types in this family
Type
Double Regulating Valves
Double regulating valves are static balancing valves with a calibrated handwheel and positive stop: the setting can be preset, locked and reopened to exactly th
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Fixed Orifice Double Regulating Valves
Fixed orifice double regulating valves add a calibrated orifice to the double-regulating trim, so flow is read from the differential pressure across a fixed res
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Variable Orifice Double Regulating Valves
Variable orifice double regulating valves balance on the valve's own variable restriction rather than a fixed orifice, in the larger flanged sizes where a separ
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Balancing Flow Measurement Devices
Flow measurement devices pair with balancing valves to read circuit flow at a dedicated fitting — a separate measurement point where the regulating valve itself
View specifications →Request a quote for balancing valves
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