Sioux Chief ETP series electronic trap primers shall be used where replenishment of floor drain traps is required. Trap Primers shall be listed and Certified to ASSE 1044 and equipped with solenoid actuating device, vacuum breaker and proper electrical hardware. ETP series trap primer's water release is factory-set for daily operation of 2 oz of water. ETP series trap primers allow for various water distribution by adjusting the frequency and duration of the priming operation. Electronic trap primers are equipped with an ASSE 1010 water hammer arrester to protect the solenoid device. The ETP trap primer without access box can be used in conjunction with various trap priming accessories within the 695 series (distribution splitter and wye) to prime up to 8 drains.