* The Clack WS1 single and WS1EE twin control valves are now available to Water Improvement companies only. Go to this page and order single column system of your choice >> 5800SXT SERIES   Then in the SHIPPING INSTRUCTIONS BOX type "PLEASE PROVIDE THE CLACK WS1 CONTROL". You will have to specify the connectors and order a bypass in order to receive one.  For the twin series go to this page >> 9100SXT SERIES   Then in the SHIPPING INSTRUCTIONS BOX type "PLEASE PROVIDE THE CLACK WS1EE TWIN CONTROL". You will have to specify the connectors and order a bypass in order to receive one.

* You may be eligible for tax exempt status and in order to do so, please provide us with a tax exemption form from your state and then provide us your login name and email address so that we can render your account as tax exempt. We will then refund you the initial taxes that you paid when we receive this form.

* We will private label systems for you. In the supplied SHIPPING INSTRUCTIONS box during the ordering process state "No Labels or Do Not Send An Invoice Or Packing List With Shipment".