Lead Free Double Check Valves


Top Entry Double Check Valve Lead Free

The Apollo Series 4A-100 Double Check Valves are designed to prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are objectionable, but non-health hazards. The modular check valve captured spring cartridges have replaceable seats and silicone seat discs.

Watermark Schedule

DCV 15mm - 50mm Technical Data Sheet

Complete with ball valves and strainer 

Product Codes

ADC15 - DCV 15mm, lead free bronze

ADC20 - DCV 20mm, lead free bronze

ADC25 - DCV 25mm, lead free bronze

ADC32 - DCV 32mm, lead free bronze

ADC40 - DCV 40mm, lead free bronze

ADC50 - DCV 50mm, lead free bronze

During normal flow conditions, the two check valves are held off their seats, supplying water downstream. Each check valve is designed to maintain a minimum of 7 kPa across the valve during normal operation. Should the downstream pressure increase to within 7 kPa of supply pressure, both check valves will close to prevent a backflow condition.


  • Low pressure loss
  • Modular check valve cartridges with easily replaced parts
  • Top access for fast testing and easy maintenance
  • Testcock protectors
  • Corrosion resistant
  • No special tools required
  • 5 year warranty
  • AS2845.1 approved
  • Horizontal or vertical installation
  • Maximum working pressure 1,200kPa
  • Temperature range 1°C - 85°C
  • Designed, manufactured, assembled and tested in South Carolina, USA