1098 and 1100 Siphons

The Ashcroft® series 1098 pigtail and 1100 coil pipe siphons protect pressure instruments from the effects of live steam. Installed water-filled, siphon models prevent direct contact with steam, ensuring uncompromising pressure measurement and integrity of the sensing instrument. A perfect choice for satisfying many applications requirements.

Key Features:

  • Choice of types; material and capacity
  • Selection of shank styles
  • Stamped with date code, material and heat numbers


  • Capacity: Type 1098: to 9,550 psi at 400 F Type 1100: to 500 psi at 400 F
  • Process / Instrument Connections: 1/4" and 1/2"

The type 1098 and 1100 Siphons are ideal where process protection is essential:

Process Market:

  • Oil and Gas
  • Refineries
  • Chemical and Petrochemical
  • Water and Wastewater

Process Applications:

  • Biogas and Biodiesel