Customer Success Story

Valve closing speed in the process industry

Customer Success Story - Valve Closing Speed

A privately owned specialist Valve Automation Centre serving the global Oil & Gas sector was asked to supply a valve and actuator that would meet a very precise and short closing speed requirement.
Learn more about ASCO Oil & Gas Industry Solutions

The product did not only have to meet the precise and short closing speed requirements of the end user but also needed to meet strict certification and SIL requirements.

ASCO supplied a 1/2", fully stainless steel Filter Regulator which meets the requirement of NACE MR 01.75 and is certified to ATEX II 2 G/D EEx c IIC X. and SIL. Suitable for inlet pressures up to 10 bar, the 1/2" filter regulators have a fully stainless steel construction and comply with the requirements of ASTM A351/NACE MR 01.75.

The moulded reinforced diaphragms offer a large flow and the fine adjustment and dual springs ensure accurate and stable regulation regardless of input or output pressures. With a 316L stainless steel filtering element (25μm or 5μm), the regulators are suitable for compressed air and gases.

The 1/2" filter regulator was tested against a 1/2" regulator from a competitor. When fitted with the competitor's filter regulator the valve took 11.7 seconds to close, when fitted with the ASCO filter regulator the valve closed in 7 seconds.

If the valve and actuator had not been able to meet the closing speed requirement an additional volume booster may have been required. This would have added cost and complexity, would have been more challenging to commission and would have introduced additional potential failure points.

The smooth design and two tapped mounting holes facilitate easy mounting and there is a separate connection for the optional pressure gauge. Besides an impressive flow rate ranging from 3920 to 4430 l/min, the filter regulator is suitable for ambient temperatures from -40°C up to +80°C (-60°C for arctic conditions available on request).

The customer was able to meet the end user specifications for closing speed without the need to add additional components.

Useful Links
For more information about our stainless steel Filter Regulator for the process industry, please open the 342 series page
For more information about our Functional Safety (SIL) expertise, click here

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