Cheap And Discounts Electric Automatic Manipulator Shut Off Valve for Alarm Gas Water Pipeline Security Device Assortment 12V 1/2 DN15 3/4 DN20 Wholesale. Buy Directly From Merchant Shop1100347798 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.