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6.1.F. - Page 7 <br /> DOUBLE CHECK VALVE ASSEMBLY <br /> Concrete Lid <br /> •�—� �' � ° . ' ' . . a ' 4 . a' . � ' � ' ' � . . . -. ' . - '���Y� ,?� • _ <br /> .a. .A. �d'• ?'..' <br /> \�� . . ' . .de d 'd d . • � \ �C` � <br /> y� 4 dp <br /> e ' ' y. <br /> 'P M c,�, <br /> Christy Reinforced ��b� <br /> =:b.: Concrte Box -�:�;: <br /> �� o o =�a <br /> .r�. <br /> •a-: . � ����' <br /> c�a <br /> � � � � � <br /> r -r <br /> Fram � <br /> 1Y12f8C n �. <br /> I <br /> n�' a-'. <br /> �f' <br /> a , a n <br /> d. � °Oo� o(�� O O°o� D� O dJ {�°D � � a o I <br /> a e- � �OO`O O ��D� O � O�OO OO a e� OOO�Q�OO �OO Oa� <br /> n�:� Q C�c� �Oc���O��° a °o �p°�0 ° o <br /> � a. o 00 0000 ooQ �g oo ag oo�o 0�80 �° � a- S n� �000��� <br /> o p o � <br /> � <br /> 0 0 0 0 <br /> �o�o.o o� o� c�o���o��o 00 on�o 0 0 og � <br /> � o <br /> �z" Rrain Rock ELEVATION �2" p�ain Rock PROFILE <br /> Below Assembly Below Assembly <br /> N OTE: <br /> 9. Be[ow grade Double Check Val�es{DC)shall be instalfed for residences using <br /> groundwater or creek water for lancfseape irrigation; and that do not have a cross <br /> eonneetian. Ef a erass car�nection exists,those properties wifl be required to use an abo�e <br /> grade Reduced Pressure Principle Backflow Preventer(RP). <br /> 2. 7he DC shall be Wilkins Model 35�X�"�ead �ree"or approved equal; and installed in a <br /> Christy B16 or approved equal concrete box. The box sha[I provide enough space around <br /> the DC ta aflow for testing and mainter�ance. <br /> 3. 7he DC shall be installed in the upright pasition, such that the test eocks are facing upward. <br /> 4. The DG shall be installed in tYte center of the box to pro�ide equal distance on either side of the device. <br /> 5. Tf�e DC shal{he installed as close to the rneter as feasible as cfetermined by the Cify. <br /> N0� TO SCALE <br /> CI'�`Y OF RED�40D CITY DETAIL <br /> Reduvood ENGINEERING AND TRANSPORTATION <br /> �� ���� BAC�CFLOW PREVENTI�N DEV�CE <br /> ( FOR RESIDENTIAL USE ON HOMES BPDs� a <br /> DATE: 08/16/12 W�TH PRIVATE WE�.L ) SHT 'f OF 1 <br />