The Onyx 0.16LT Shock Arrestor MPN ONYXSA is a compact, maintenance-free vessel designed to absorb small pressure fluctuations and reduce water hammer in domestic plumbing and heating systems.

Product Description

This 0.16 litre mini expansion vessel accommodates slight increases in system volume when valves or taps close quickly, protecting pipework and fittings from damage. Supplied pre-charged and ready for immediate installation, it eliminates annoying banging noises and extends system component life.

Key Features

• Maintenance free: Factory pre-charged, no routine recharging needed.
• Water hammer control: Dampens pressure spikes from fast-closing valves.
• Compact size: 0.16L volume ideal for tight spaces.
• Easy connection: 1/2" BSP male thread for simple pipework integration.
• Pre-charge pressure: 3.5 bar (adjustable if required).

Technical Specifications

• Nominal volume: 0.16 litres.
• Connection: 1/2" BSP male.
• Max. pressure: 10 bar.
• Pre-charge pressure: 3.5 bar.
• Max. temperature: 90°C.
• Material: EPDM diaphragm, steel shell with powder coating.
• Weight: 0.21 kg.

Physical Specifications

• Dimensions: Approx. 85 mm diameter × 140 mm height (including connection).
• Orientation: Vertical or horizontal mounting.
• Protection: Corrosion-resistant coating.

Applications

• Domestic hot and cold water services.
• Heating circuits with minor expansion needs.
• Installations with combi boilers, showers, and fast-acting valves.
• Potable water systems to reduce noise and wear.