Male cap nut

First the female cap nut is raised with the left hand. Then, pressing the female cap nut up to the under surface of the flange of the reference cell with the left hand, the laboratory jack is lowered. After the female cap nut, into which the reference cell is inserted, has been detached down from the stainless steel jig in with the left hand, the male cap nut is screwed lightly into the female cap nut with the right hand. 

Figure 1. Cross section of sampling cartridge 1, stainless steel swagelok nut, 0.64 cm ( 4 in.), no. SS-402-1 2, stainless steel swagelok male connector, 0.95 cm (fIn.), NPT no. SS-400-1-6 3, Teflon O-ring, 2.664 cm i.d., wall thickness 0.262 cm 4, stainless steel screen, 40 mesh 5, stainless steel swagelok cap (modified with female in. NPT through end), no. SS-2400-C 6, Pyrex brand glass wool 7, XAD-2 Amberlite resin and 8, 304 stainless steel tube, 3.81 X 0.305 cm (1.5 X 0.120 in.), ASTM A269.

Note 3—As an alternative, the cylinder can be equipped with A-in. male NPT to a 6.3S-mm ( A-in.) outside diameter tubing plug valve. Then a 6.35-mm tube fitting nut can be used with the septum, thus avoiding the necessity of drilling a brass cap. 

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