Pressure loading valves

The 1100 Series valves are designed specifically for the dosing industry. Offering exceptional reliability, flexibility and safety, they meet the needs of dosing pump manufacturers, dosing system builders and end users alike.

Valves available in:

PVC / PP / ABS / PVDF / PTFE / 316L Stainless steel / Hastelloy C276 / Titanium Grade 2 / Alloy 20

Optional features can be incorporated including vent alarm, security locks and manual lift. All valves are available to match all types of connections and pipework standards.

Size and capacity

The sizes and capacities available provide the flexibility to match virtually any pump or system throughout whilst retaining uniformity of design, operational familiarity and – when required – spares.

The valves operate on the spring-loaded diaphragm principle and although designed initially for use within dosing systems they are equally suited for installation on any other pressure relief or loading duty consistent with their type and design.

Click here to specify your 1100 Pressure Loading Valve

Click here for Technical Data



  • Pressure relief of dosing lines.
  • Pressure sustaining (loading) for dosing pumps.
  • Pressure relief for progressive cavity or other positive displacement pumps.
  • Flow checking (where supply pressure is higher than pumped discharge pressure).
  • Anti-siphoning.
  • Combination back pressure & check valve.
  • Back pressure valving.
  • Pump re-cycle bypass relief.
  • Thermal expansion relief.

Information required for quotation

  • Pumped fluid details and flowrate (advise if damped or not)
  • Standard valve or special option
  • Type of connections required (and size of pipework if existing)
  • Any preferred construction materials
  • Required relief of loading pressure if required for factory setting