SOLUTIONS CENTRAL | April 2021 | mrfpr.com/blog
ASCO™ Series 158 Valve & Series 159 Motorized Actuator
ASCO Series 158 Gas Valve and Series 159 Motorized Actuator deliver the highest flow rate on the market with a reduced footprint
Emerson introduced the ASCO™ Series 158 Gas Valve and Series 159 Motorized Actuator. Designed specifically for burner-boiler applications, the new products give OEMs, distributors, contractors and end-users a new combustion safety shutoff valve option that increases safety and reliability and enhances both flow and control.
The new valve offers a higher close-off pressure of 75 psi (5.2 Bar) ensures a safe shutoff in the event of a fuel train system failure and eliminates the need for additional safety components. The valve offers a flow rate which is twice that of other combustion valves on the market. As a result, it offers the highest BTU rating in the industry as well as the ability to deal with varying gas inlet pressures — without a reduction in burner performance and operation. Installation is also made easier with end connectors that eliminate the need for piping unions and a ventless compatible monoblock design that not only does away with the need for additional vent piping, but also limits greenhouse gas and vent emissions.
Features & Benefits
Meeting stringent approvals:
• Meets UL 429, CSA 6.5 C/I, and FM 7400
High flow rates & low pressure drop
• Highest flow/heat output ratings in the industry
• Reduced pressure drop across all valve sizes
Increased reliability
• Integral valve strainer decreases downtime by 20%
• High close-off pressure of 75 psi (5 bar) mitigates damage to fuel train and field instrumentation
Low ambient operating temperature range
• New valves can be installed in frigid environments
(as low as -40 °F/°C locations)
Compact footprint and modular design
• Compact valve design and monoblock option significantly reduces fuel train length— this will reduce the spatial footprint and make it suitable for space restrictive and retrofit applications
• Modular design allows customers the flexibility to configure gas trains to fit their exact needs
• Various options are available (visual indication, proof of closure, seal type, enclosure integrity and others)
• Flexible field mounting – multipoise design allows customers to install our valves in many orientations
• Offered with NPT/ISO vent port and pipe taps
Reduce cost of ownership— installation time and effort
• Customers can utilize flange adapters to simplify mounting (no pipe unions required)
• End connections simplify valve removal
• Increase labor savings by 50% - only 1 person is needed to install
• Up to 25% less weight than competitors
The Series 158 and Series 159 meet up-to-date National Fire Protection Association (NFPA), UL, Canadian Standards Association (CSA) and FM Global standards and have earned Restriction of Hazardous Substances (RoHs) and European Standards (EN) approvals.
