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


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.


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