Filter Housing: Gauntlet TM Filter Housing

Prepare the cabinet wall or other mounting panel by installing inserts for 3/8-UNC or 10mm socket head cap screws into the dimensions specified on the accompanying page. Recommended installation of the GauntletÔ Filter Housing is with the writing from the cap in upright position, viewable from the front. Approximate weight of the assembly is 19 lbs (not including liquid or filter) so holes drilled and tapped in plastic are probably not sufficient, especially when consideration is made of forces exerted when tightening and loosening the filter housing bowl ( long piece that looks like a column).

Install cap (2) (square part with writing) by using four 3/8-UNC (or 10mm) by 5 inch (13 cm) long stainless steel socket head cap (allen wrench type) screws. (end of screws will protrude ½ inch past the filter housing cap into the inserts)

Hook up inlet and outlet tubing as well as out gassing vent lines as desired. If inlet and outlet tubing connectors are not of the type desired, Do not attempt to modify or attempt to screw male NPT tubing connectors into the filter housing cap. Irreparable damage to the cap will occur! If a female NPT connection is desired, adapters are available from White Knight. Many other types of adapters are also available from White Knight. Please contact White Knight if a different type of connection is needed.

Loosen scalloped lock nut (6) on Jack Screw (5) and turn Jack Screw outward until bellows (3) can be completely compressed without seating on the Jack Screw.

Insert Filter (11) into Filter Housing Cap (2).

Check for proper placement of the diameter sealing encapsulated o-ring (9) in filter housing cap (2).

Place face sealing encapsulated o-ring (10) in o-ring groove located on the top of the filter housing bowl (1).

Turn filter housing bowl (1) into filter housing cap (2). Take great care to not cross thread the cap and bowl! Torque with filter housing wrench (supplied by White Knight, P/N GAT100) until o-rings are compressed. The assembly may begin to tighten up before the o-rings compress especially after thermal cycling. PTFE parts have a tendency to not maintain their shape (going out of round in this case) when thermal cycled. The design of GauntletÔ Filter Housings accommodates this issue by the use of patented synchronized threads, which force everything back into shape during re-assembly, but one of the side effects is that the threads may be a little tight and/or difficult to start especially over time.

Install drain line connection (7) in bottom of housing bowl (1) as desired.

Turn in Jack Screw (5) until bellows seats against filter. This is what ensures that the filter does not fall out of the cap in the event of thermal expansion and contraction of the filter housing cap caused by thermal cycling. Do not ever extend the bellows. White Knight accommodates different lengths of different brands of filters by the use of different lengths of bellows. If filter type is not specified at the time of ordering a bellows for Pall filters is used. If for instance a bellows for Pall filters is used with Millipore filters and an attempt is made to over extend the bellows to accommodate the extra space, damage will occur to the bellows.

After seating the Jack Screw (5) twist the scalloped nut (6) upward and finger tighten against the bowl (1). This will stop the Jack screw from vibrating loose.

When changing out filters in the GauntletÔ filter housing, the first step should always be to loosen the scalloped nut and Jack Screw (even the complete removal of the Jack Screw will not cause a leak as the bellows acts as a seal). Filters from the same filter manufacturer vary in length. This being the case, care must be taken to accommodate the longest filter manufactured by the particular filter manufacturer by the outward adjustment of the Jack Screw. This ensures that upon reinstallation of the bowl into the cap after a filter change, that the o-rings are compressed before the bellows contacts the filter. After installing and tightening the bowl into the cap, the Jack Screw must then be twisted inward until the bellows contacts the filter (length variation between filters of a different length by the same manufacturer are accommodated by flex in the bellows). The Scalloped Nut must then be twisted and tightened against the bowl to keep the Jack Screw from vibrating or working its way loose.