ASCO 298 398 - Pressure Operated Valves

ASCO Series 298 - 398 - 2 Way & 3 Way Pressure Operated Valves

Series 298 - 398 - Globe Valves

ASCO 298-398 range of robust 2 and 3 way pressure operated valves are ideal for use with steam, hot and cold liquids and inert gases.

ASCO 298-398 is designed to withstand most manufacturing processes even in harsh environments whilst being easy to maintain as the valve can be fully disassembled making cleaning quick and easy.

ASCO 298-398 is a cost effective solution as it has minimal heat loss when used with a hot media, the operator is designed to reduce air consumption, has a low piloting pressure meaning the valves are unaffected by dirty steam.

Mounting outdoors in any position is made possible by the valves water and dust protection system.

Series 298-398 is made of high quality robust materials enabling the product to withstand difficult and hot ambient atmospheres.  

Designed to resist the thermal shocks caused by exposure to steam and cold water, the life of the valves is greater than two million operations on saturated steam - for further flow control solutions please visit ASCO solenoid valves.


2 Way Pressure Operated Valves

ASCO E298, T298, S298

3 Way Pressure Operated Valves

ASCO E398, T398, S398

ASCO Series 298-398 - Pressure Operated Valves

Neutral Yes Yes
Aggressive Yes Yes
Superheated Water Yes Yes
Steam Yes Yes
Fluid Temperature -10°C to +250°C -10°C to +250°C
Differential Pressure 0 - 40 bar 0 - 40 bar
Maximum Allowable Pressure 40 bar 40 bar
Allowable Backpressure Up to 40 bar N/A
Ambient Temperature -25°C to +180°C (autoclavable valve) -25°C to +180°C
Pilot Fluid Filtered air Filtered air
Pilot Fluid Temperature -10°C to +60°C -10°C to +60°C
Operator 80, 100, 150, 200mm 80, 100, 150, 200mm
Pilot Pressure Max. 10 bar Max. 10 bar

Several piloting choices are available for the ASCO 290, 39, 298 and 398 range of valves. Fluids: air or water from 1,5 to 10 bar.  Solenoid pilot valves:

  • ASCO 189 Banjo Ø 1,2 mm
  • ASCO 356 Ø 1,6 mm G1/8-1/4
  • ASCO 374 Ø 2,7 mm
  • ASCO 325 Ø 1,2 mm
  • ASCO 314 Ø 1,2 - 2,4 et 3,2 mm
  • ASCO 320 Ø 3,2 mm
  • ASCO 551 NAMUR with Interface


ASCO series 298-398 2 & 3 way pressure operated valves can be used in applications such as in the food and beverage industry, chemical processing industry and in the pulp and paper industry.

T&D are an approved ASCO NUMATICS distributor and stockist for their range of pressure operated valves. Please contact our technical sales team today or click to request a quote.

ASCO 298 398 - Pressure Operated Valves

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ASCO 298 398 - Pressure Operated Valves
ASCO 298 398 - Pressure Operated Valves

Heat Tracing - Thorne & Derrick