Low pressure diaphragm metering pump
LD series
Williams Milton Roy
Easy to Maintain
Intrinsic Safety of Pneumatic Operation
Stroke Length and Stroke Rate Adjustment
High Flow Turndown
Corrosion Resistant Construction
All 316 SS or TFE Wetted Parts
Ease of Installation
Recommended for discharge pressures below 120 PSI
STANDARD MATERIALS
Wetted Parts - 316SS or TFE
Pneumatic Section - 316SS
Diaphragm - TFE (Teflon)
Controller - 316SS
Relays - 316SS
DESIGN IMPROVEMENTS
Higher Flow Rates than PD Series pump models
All TFE diaphragms for all pump sizes
TFE-coated o-rings in contact with process fluid
Viton® o-rings in contact with air/gas supply
Stroke Adjuster locks in place with a simple thumbscrew
Stroke Adjuster scale easier to read and set than previous diaphragm pump models
Check Valves for 316SS models have TFE soft seats with 316SS balls. (LD200 & 400)
Check Valves for TFE models have TFE soft seats with Zirconium balls. (LD200 & 400)
Check Valves on LD100 models are Kynar with Kynar soft seats and Zirconium or Ruby Sapphire balls
