What's New: ASCO™ Series 158 Valve & Series 159 Motorized Actuator

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


Click here to watch the video



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.













Contact M. R. Franceschini, Inc.

for more information 787-622-7080

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