The QlikView Webparts Manual has a section named "NTLM Multi-hop Authentication Issue" which described three different ways to deploy QlikView webparts to avoid NTLM double hop issues:
2) Header Authentification
3) QvAjaxZfc on the Same Machine as SharePoint
This article describes how to install QvAjaxZfc on the Same Machine as SharePoint
A prerequisite is that the QlikView Server and other QlikView Services are already up and running on another machine.
When the QvAjaxZfc directory is on the same machine as SharePoint – multihop is no issue even though there are still multiple hops. This is due to the fact that QvAjaxZfc uses QlikView-specific authentication instead of NTLM for the hop back to QlikView Server, which avoids the multi-hop issue altogether.
It should be noted that placing the QvAjaxZfc directory on the SharePoint machine almost certainly requires less configuration effort than configuring Kerberos to allow delegation, so the former is recommended (where possible).
1) On the Sharepoint machine. Run the installation package for QlikView Server. Do not do a full installation, instead select Custom Installation and select to install only the QlikView Web Server. When selecting an account to run the service as, use the same domain account that the QlikView Server is using. This user needs to be a member of Administrators and "QlikView Administrators" on the Sharepoint Machine.
2) On the QlikView Server machine. Open the QlikView Management Console and go to System Setup. Select Web Servers. Add a new QlikView Web Server which points to the Sharepoint Server http://<sharepoint server>:4750/QVWS/Service and apply.
3) On the General tab of the QlikView Web Server that you just added, change the Directory Service Connector from default, to the DSC hosted on the QlikView Server DSC@hostname. On the Accesspoint tab, select Server Connections. In Server Connections, change Name from Local to the QlikView Server QVS@hostname.
4) On the Sharepoint Machine, navigate to http://< Sharepoint Server Name >/QlikView. This should open Accesspoint, and you should be able to open a document.
5) On the Sharepoint Machine, run the installation package for QlikView Webparts. On the "Web Folder" page of the wizard enter the URL of the local machine:
http://< Sharepoint Server Name >/QvAjaxZfc/
The wizard also asks which Sharepoint Web application to install to, which has to be selected from a drop down box. Do not check the box for making QlikView Webparts available.
6) After the Wizard has completed, run the installation scripts as described in the C:\Program Files\QlikView\WebParts\Readme.txt.
7) In the web.config of the Sharepoint Server, find the QlikViewWebParts section and verify that the QvAjaxZfcPath is pointed to the correct URL http://< Sharepoint Server Name >/QvAjaxZfc/