Almatec AHD/AHS
Description
High-pressure diaphragm pump series AHD and AHS
ALMATEC air-operated diaphragm pumps in the AHD and AHS series have been specially developed for safe high-pressure applications up to 15 bar.
The high-pressure diaphragm pumps in the AHD series have an internal pressure ratio. With a drive pressure of max. 7 bar, they achieve a delivery pressure of 15 bar due to the internal pressure ratio. The "D" in AHD stands for duplex, i.e. the amplification of the drive pressure via the internal pressure increase in a ratio of more than 2:1. The pumps in the AHD series are available in three sizes with maximum flow rates of 4 m³/h (AHD 15), 10 m³/h (AHD 25) and 20 m³/h (AHD 40). These pumps are typically used for feeding filter presses.
The two sizes in the AHS series (AHS 15 and AHS 25) do not have an internal pressure booster. However, the extremely robust design also enables higher delivery pressures. The maximum drive pressure and delivery pressure is 15 bar. In principle, the AHS series is suitable for all applications under heavy-duty conditions, from low variable delivery pressures to high-pressure applications. The "S" in AHS stands for simplex, because here the drive pressure is transferred to the medium in a 1:1 ratio. Due to this 1:1 ratio, the appropriate supply air pressure must be provided, e.g. from the compressor itself or a compressed air booster, which is also available from Almatec.
If you require a high delivery pressure of 15 bar - regardless of whether it is an AHD pump with an internal pressure intensifier or an AHS pump that achieves the delivery pressure by means of an external booster - you can do so safe in the knowledge that the pump is also designed for such pressure ranges and does not need to be held together by external reinforcements.
Technical data
Further features of the AH series at a glance
- Corrosion and wear-resistant housing made of PE UHMW*
- Double-acting functional principle
- High pump safety thanks to innovative ring compression
- Automatic pressure adjustment during filter press operation
- No control or safety devices required for dry-running protection, overpressure protection and speed control
- Safe operation over the entire flow rate range without risk of over-pressurisation
- No drives, no rotating parts and no shaft seals
- Dry-running safety
- Self-priming capacity
- Easy commissioning
- Soft transport due to compressible drive medium
- Very small space requirement
- Specially developed heavy-duty diaphragms with a long service life
- Horizontal or vertical connection configuration, DIN or ANSI flange connections
- Interchangeable ball valves and ball catchers
- Maintenance-free PERSWING P® air control system without dead centre
- Customised special equipment (booster for AHS, diaphragm monitoring, stroke counting)
A version of the high-pressure diaphragm pump in stainless steel precision casting can be found in the Chemicor product group.
