Photo: Tony Webster · CC BY 2.0 · Image credits
Thermal Equipment & Pumps
Diaphragm Pressurised Expansion Vessel
Model: EV-P
Closed diaphragm expansion tank that absorbs water expansion in heating and cooling circuits.
- Replaceable butyl diaphragm
- Painted steel shell with anti-corrosion coating
- Adjustable pre-charge pressure
- 8 to 1000 litre sizes
Nationwide delivery · Free technical advice
Volume8 – 1000 L
Pre-charge1.5 – 4 bar (adjustable)
Process connectionG¾″ – DN100
Overview
The EV-P uses a replaceable rubber diaphragm to separate water from a nitrogen cushion and absorb temperature-induced volume change. This keeps system pressure stable and spares the safety valve from frequent opening.
Technical specifications
General
- Volume
- 8 – 1000 L
- Pre-charge
- 1.5 – 4 bar (adjustable)
- Process connection
- G¾″ – DN100
Materials & construction
- Body material
- Carbon steel · epoxy-coated
- Sealing
- Butyl diaphragm
Process conditions
- Pressure rating
- up to 10 / 16 bar
- Operating temperature
- −10 … +100 °C
- Medium
- Water · glycol
Standards & approvals
- Design standard
- PED 2014/68/EU
- Certifications
- CE
Applications
Closed heating and chiller loops
Domestic hot water systems
Cooling systems
Solar thermal installations
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