R88E-1111 GIACOMINI | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 6
Technical content
Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italy consulenza.prodotti@giacomini.com +39 0322 923372 - giacomini.com Versions and product codes PRODUCT CODE CONNECTIONS MAIN CHARACTERISTICS R88EY002 G 3/8”M • Shut-off valve
- Integrated inspectionable filter
- Adjustable horizontal vent
- Cap with hygroscopic gasketsR88EY003 G 1/2”M R88E Datasheet 1111EN 02/2025 Compact automatic air vent with integrated filter and horizontal vent The R88E compact automatic air vent performs the function of venting air formed in the hydraulic circuits of HVAC systems. It prevents the phenomena that may affect the duration and efficiency of the thermal system. The air vent effectively vents the system on a periodical basis during normal operation. The R88E air vent consists of a fluid shut-off valve, an inspectionable filter, an adjustable horizontal vent and a cap with hygroscopic gaskets. VIDEO Frame the QR code with your smartphone or tablet to view the video tutorial.
Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italy consulenza.prodotti@giacomini.com +39 0322 923372 - giacomini.com
1 Air vent body
2 Locking fork
3 Body cap
4 Air vent cap
5 Paddle with shut-off valve
6 O-Ring
7 Spring
8 Inspectionable filter
9 O-Ring
10 Float
11 Stem
12 Spring
13 Washer and gasket
14 Hygroscopic gaskets
Components 12 13 14 12 13 14 Technical data Materials
- Body: UNI EN 12165 CW617N brass
- Body cap, air vent cap and fork: glass-fiber reinforced PA66
- O-Ring: EPDM
- Springs and filter: stainless steel
- Float: PP-H Performance
- Fluids of use: water with glycol for HVAC systems
- Max. glycol percentage: 50 %
- Temperature range: 5÷110 °C
- Max working pressure: 16 bar
- Air venting max working pressure: 7 bar
- Integrated filter: filtering capacity 500 μm
- Venting air flow rate: 0 1 2 3 4 5 6 7 100 200 300 400 500 600 Air flow rate [l/h] Pressure [bar] PRESSURE [bar] AIR FLOW RATE [l/h] 1 440 2 510 3 540 4 500 5 400 6 310 7 250 NOTE. The diagram includes the maximum venting air flow rate as the relative pressure of the system changes.
Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italy consulenza.prodotti@giacomini.com +39 0322 923372 - giacomini.com Installation WARNING. To prevent impurities from entering and damaging the mechanism, close the air vent cap (Components - Ref. 4) when flushing and loading the system. NOTE. The air vent includes a paddle that extends 25 mm from the body. If needed, cut the exceeding part with a shear. R88E automatic air vent can be installed in the highest point on any distribution manifold, pipes where air pockets may form, on wall-mount or base-mount boilers, near fan coils or heat exchangers. The automatic air vents must be installed vertically with the body cap facing up and in points easy to access. Adjustable horizontal vent 360° Manually turn the body cap (Components - Ref.3) to adjust the horizontal vent according to installation needs.
Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italy consulenza.prodotti@giacomini.com +39 0322 923372 - giacomini.com Operation Air vent cap with hygroscopic gaskets (Components - Ref.4) The air vent cap contains hygroscopic gaskets (Components - Ref.14). In case of system malfunction resulting in a leak, the volume of the gaskets will increase when they touch the water, closing the vent and preventing water leaks. During normal operation, when there is no air in the body, the internal float is raised and a mechanical function keeps the vent stopper closed. When the float lowers for the air trapped inside the body, the stopper will open to vent it completely. Should there be a large quantity of air in the system, the float will lower completely to vent the air more rapidly. The air vent can be blocked manually by tightening the air vent cap all the way through (Components - Ref.4). Under normal working conditions, the air vent cap should be left open. WATER AIR STOPPER CLOSED STOPPER OPEN AIR AIR WATER Shut-off valve (Components - Ref.5) The threaded fitting contains a stopper with spring (Components - Ref.7) which is pushed down by the body cap (Components - Ref.3): in this situation the valve inlet is open. The body cap (Components - Ref.3) can be removed during maintenance: the spring will close the valve inlet, hence shutting off the fluid. NOTE. For maintenance operations, refer to “Cleaning and maintenance” paragraph.
Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italy consulenza.prodotti@giacomini.com +39 0322 923372 - giacomini.com Cleaning and maintenance Cleaning the filter Impurities may collect on the filter inside the air vent body during normal operation. There is no need to drain the system, but the device must be empty to clean the filter (system off). Follow the steps below to clean the filter and remove the debris: 1) make sure the system is off; 2) remove the locking fork by pushing the cap gently down; 3) remove the body cap from the air vent body -once removed, the shut-off valve inside the threaded fitting will close to prevent water leaks; 4) remove the filter from its seat using a small screwdriver - the filter has four small grooves to remove it; 5) rinse the filter with running water; 6) replace the clean filter in its seat; 7) replace the body cap and, if necessary, lubricate the EPDM O-Ring (Components - Ref.9) with an adequate lubricant; 8) fit the fork in the proper seat to lock the cap. Once locked, the shut-off valve will reopen to let the water flow in. Normal operation of the system can now resume. LUBRICANT OFF LUBRICANT OFF 5 6 7 8 2 3 4 NOTE. The strength to be applied when removing the body cap is directly proportional to the system pressure. To facilitate maintenance it’s recommended to reduce the system pressure as much as possible.
Giacomini S.p.A. Via per Alzo 39, 28017 San Maurizio d’Opaglio (NO) Italy consulenza.prodotti@giacomini.com +39 0322 923372 - giacomini.com Product specifications R88E Compact automatic air vent with adjustable horizontal vent and hygroscopic gaskets, for HVAC systems. Available with G 3/8”M or G 1/2”M connections. Inspectionable filter with 500 μm filtering capacity included. Body: UNI EN 12165 CW617N brass. Body cap, air vent cap and fork: glass-fiber reinforced PA66. O-Ring: EPDM. Spring and filter: stainless steel. Float: PP-H. Fluids: water, glycol-based solutions (max 50 %). Temperature range: 5÷110 °C. Max working pressure: 16 bar. Air venting max working pressure 7 bar. Dimensions R88E Package Disposal. Carton boxes: paper recycling. Plastic bags and bubble wrap: plastic recycling. Product Disposal. Do not dispose of product as municipal waste at the end of its life cycle. Dispose of product at a special recycling platform managed by local authorities or at retailers providing this type of service. Safety Warning. Installation, commissioning and periodical maintenance of the product must be carried out by qualified operators in compliance with national regulations and/or local standards. A qualified installer must take all required measures, including use of Individual Protection Devices, for his and others’ safety. An improper installation may damage people, animals or objects towards which Giacomini S.p.A. may not be held liable. Additional information. For more information, go to giacomini.com or contact our technical at any time, without notice and for technical or commercial reasons, the items included herewith. The information included in this technical sheet do not exempt the user from strictly complying with the rules and good practice standards in force. NOTE. EUROPEAN DIRECTIVE 2014/68/UE. The product illustrated in this technical specification satisfies the requirements of Directive 2014/68/UE and is exempt from CE marking, according to Article 4.3. CD E B A PRODUCT CODE A B [mm] C [mm] D [mm] E [mm] R88EY002 G 3/8”M 59 58 25 48 R88EY003 G 1/2”M 59 58 25 48