Applications

• A flushing ring is for use with diaphragm seal model numbers 990.27 and 990.28 when there is a potential of the deposits from the process medium blocking access to the diaphragm seals.
• The flushing ring is designed to be sandwiched between the process flange and the diaphragm seal.

Special Features

• The material collecting in front of the diaphragm can be flushed out through the lateral flushing boreholes
• The pressure chamber can be vented by means of these rings
• Various nominal widths and forms allow adaption to the respective process flange
• Material Stainless steel 316L
• Flushing: connection: ½" NPT female (without plug screws)
• Installation: The flushing ring is clamped between process flange and diaphragm seal using standard sealing elements (seals to be ordered separately).

Process connection

• For flanges per EN 1092-1 and ASME B 16.5
• DN 50, 80, 100, 125 or NSP 2", 3", 4", 5"
• PN 16 ... 100 or Class 150 ... 600

Sealing faces

• per EN 1092-1 form B1 or
• per ASME B 16.5 RF 125 ... 250 AA

Materials

• Stainless steels 1.4571, 1.4404, 1.4435, 1.4541,´
• Hastelloy B2, C4, C276; Monel 400, nickel,
• titanium (other materials possible)
• With Acceptance Certificate per EN 10 204 - 3.1 B

Sealing faces

• per EN 1092-1 form B2 or 
• per ASME B 16.5 RFSF, 500 AA, 125 AA
• per EN 1092-1 form C (tongue), form D (groove)
• per ASME B 16.5 RJF (Ring joint face)

Other forms of sealing faces on request

Flushing connection

• G ½", G ¼", ¼" NPT female
• ½" NPT, G ½ B, G ¼ B, ¼" NPT male

With plug screws, material stainless steel 316L