Separatorless Filters.

DOE-STD-3020-97

the case. The filter medium support shall be nonflammable.

The panels on the left and right sides of the filter shall be

sealed to the case with adhesive.

Separatorless Filters. Dividers shall be provided as

5.4.2.3

appropriate for additional support. The vertical plane

formed by the ends of the convolutions shall not deviate

more 3/4 in. (19 mm) from the top to bottom of the pleat and

shall be recessed at least 1/16 in. (1.6 mm) from the plane

formed by the four sides of the filter frame. Where

convolutions do not have crest-to-crest contact, spacing

shall not be less than 1/16 in. (1.6 mm). Nesting of

convolutions is not permitted. Abrupt kinks or deviations in

the folds of the medium are not permitted. The trimmed

edges of the filter element shall be firmly potted (fixed) into

the sealant. The two flap edges shall have sufficient

sealant to secure them to the frame sides.

Filter Case. The case shall be fabricated in compliance with the

5.4.3

provisions of Section 5.3.2 of this standard. The completed case,

less gaskets, shall conform to the dimensions listed in Section 5.2.2,

Table 1 of this standard, unless alternative dimensions are specified

in procurement documents. Section 5.4.3, Table 2 of this standard

lists the acceptable tolerances.