BOA-SuperCompact Wafer-Type Globe Valves
Compact wafer type globe valves are short globe valves fitted between two flanges and used for both shut-off and throttling in hot-water heating, air-conditioning and heat recovery circuits. Flange lugs on the body centre the valve on the pipe axis; the same lugs allow the pipe downstream to be removed and the valve to be used as an end-of-line valve.
The one-piece body and the disc are EN-GJL-250 grey cast iron, and the stem is stainless steel with at least 13% chromium. The valves are made from DN20 to DN200 to suit PN6, PN10 and PN16 flanges and operate up to 16 bar between −10 and +120 °C. The inclined-seat flow path keeps pressure loss low, and the EPDM-clad disc throttles with a linear characteristic.
Main Applications
- Hot-water heating circuits
- Air-conditioning and chilled water circuits
- Heat recovery lines
- Boiler room manifold outlets
- Fan-coil and air handling unit connection lines
Technical Data
| Nominal pressure | PN6 / PN10 / PN16 |
|---|---|
| Max. operating pressure | 16 bar (−10 … +120 °C) |
| Size | DN20 … DN200 (DN20/25 one body) |
| Media | Water and water-glycol mixtures |
| Unsuitable media | Media containing mineral oils, steam, media attacking EPDM and cast iron |
| Design | Inclined seat, straight upper section, one-piece body |
| Connection | Centring lugs, between EN 1092-1/-2 flanges (Form A) |
| Length | EN 558 series 94 (DN25–DN150) · series 14 (DN200) |
| Test | EN 12266-1; shell 24 bar, seat 17.6 bar, leakage rate A |
| Directive | 2014/68/EU, group 2 fluids |
| Standard equipment | Stroke limitation, position indicator, locking device |
| Option | Electric actuator |
Material Options
| Part | PN16 · grey cast iron, DN20–DN150 | PN16 · grey cast iron, DN200 |
|---|---|---|
| Body | EN-GJL-250 (5.1301) | EN-GJL-250 (5.1301) |
| Disc | EN-GJL-250, EPDM clad | EN-GJL-250, EPDM clad |
| Stem | Stainless steel, min. 13% Cr | Stainless steel, min. 13% Cr |
| Profile seal | EPDM | EPDM |
| Axial bearing | Steel-PTFE (DN50 and above) | Steel-PTFE |
| Stem nut | Galvanised, passivated steel | Galvanised, passivated steel |
| Protective cap | Glass-fibre reinforced plastic | Glass-fibre reinforced plastic |
| Handwheel | Plastic (DN20–DN50) · die-cast aluminium (DN65–DN150) | EN-GJL-200 (5.1300) |
Media warning: These valves must not be used on steam lines or in circuits containing mineral oil; the EPDM sealing elements do not withstand these media. In closed heating systems, adding an air separator to the circuit is recommended.
Advantages
Short Length
- Compact body with series 94 length.
- Fits tight installation spaces.
Maintenance-Free
- Lubricated EPDM profile seal.
- Designed for lifetime tightness.
Shut-Off and Throttling
- EPDM-clad disc, linear characteristic.
- Less need for a separate regulating valve.
Insulation-Ready
- Position indicator outside the insulation.
- Cap protects against condensation.
End-of-Line Use
- Body with centring lugs.
- Downstream pipe can be removed.
Construction and Design Features
- Inclined-seat, flow-shaped passage
- Non-rising handwheel and protected external stem thread
- Integrated stroke limitation and locking device
- Sealable setting and position indicator
- RAL 5002 blue external paint
Send the circuit type, size, flow rate and control method through the Request a Quote form; we will prepare the compact globe valve, with an electric actuator if required.
How to Choose?
- Check the mediumConfirm it is water or water-glycol, without steam or oil.
- Confirm pressure and temperatureMake sure operating conditions do not exceed 16 bar and 120 °C.
- Choose the sizeDetermine the DN from circuit flow and allowable pressure loss.
- Decide on throttlingIf flow is to be set, fix the setting with the stroke limitation.
- Choose the controlPrefer the version with an electric actuator if automation is needed.
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Why ORFA?
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Our BOA-SuperCompact Wafer-Type Globe Valves
ORFA supplies boa-supercompact wafer-type globe valves in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.
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Our sales team will prepare the best solution for your needs.