ASCO Series Gas Valve and Motorized Actuator (158 & 159)

The ASCO Series 158 Gas Valve and Series 159 Motorized Actuator are designed specifically for burner-boiler applications. The new products give OEMs, distributors, contractors, and end-users a combustion safety shutoff valve option that increases safety and reliability and enhances both flow and control.

 

The valve offers a  higher close-off pressure of 75 psi (5.2 Bar) and 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 that 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.

 

The ASCO Series 158 is a gas valve range available in sizes from 3/4 to 3-in. NPT (DN 10 to DN 80) in both single and monoblock constructions. The ASCO Series 159 Motorized Actuator has a rugged construction, can mount in any position and offers a visual indication of opening. This safety shutoff valve is rated for an ambient temperature range of -40 to 150°F (-40 to 66°C) and is offered with an optional watertight National Electrical Manufacturers Association (NEMA)-approved Type 4 enclosure.

 

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.

Series 158MaterialDie-cast aluminumConstructionSingle and MonoblockMediaFuel gasPipe Sizes3/4 to 3 in. NPT and ISOFunction2-way normally closedFlow FactorFrom 13.3 to 126.1 Kv, From 15.4 to 145.8 CvMaximum Operating Pressure Differential20 psi (1.4 bar)Ambient Temp. Range-40 to 150° F (-40 to 66°C)Close Off Pressure Differential2.1 (30) to 5.17 (75)Agency Approvalswhen coupled with the ASCO 159 series Actuator:
UL 429,
ANSI Z21.21/ CSA 6.5 C/I
FM 7400
EN161 Class A
RoHSSeries 159Valve ActuationMotorizedVoltage110 AC, 120 AC, 220 AC, 230 ACAmbient temperature range-40 to 150°F (-40 to 66°C)Power Requirement220 VA max.Actuator FunctionOn/Off or High/Low/OffAgency Approvalswhen coupled with ASCO series 158:
UL 429
ANSI Z21.21/ CSA 6.5 C/I
FM 7400
EN 161 Class A
RoHSEnclosure IntegrityIP10 & Type 1, IP65 & Type 4