Lead Free Reduced Pressure Zone Valves


Reduced Pressure Principe LEAD FREE

The Apollo Series 4A-200 Reduced Principle Backflow Preventer is designed to give maximum protection against backflow caused by either back-pressure or back siphonage from substances that are hazardous. The durable but economical device is easily maintained in the line with modular check cartridge assemblies that require no special tools. It consists of two independently acting spring-loaded check valves with an automatic differential relief valve located between the check valves. All testcocks are mounted at the top of the unit to assure easy access during repair and maintenance when unit is installed in tight places.

Watermark Schedule

RPZ 15mm - 50mm Technical Data Sheet

Complete with ball valves and strainer

Product codes

ARP15 - RPZ 4A 15mm, lead free bronze

ARP20 - RPZ 4A 20mm, lead free bronze

ARP25 - RPZ 4A 25mm, lead free bronze

ARP32 - RPZ 4A 32mm, lead free bronze

ARP40 - RPZ 4A 40mm, lead free bronze

ARP50 - RPZ 4A 50mm, lead free bronze


  • Maximum protection against back-pressure/back-siphonage
  • Modular check valve cartridges with easily replaced parts
  • Reversible/removable chloramineresistant silicone seat discs
  • Low head pressure loss
  • Internal sensing passage
  • Corrosion resistant
  • AS2845.1 approved
  • Maximum pressure 1,200kPa
  • Temperature range 1°C - 85°C
  • Horizontal installation
  • Designed, manufactured, assembled and tested in South Carolina, USA
  • 5 year warranty