Apps
990.27/28 diaphragm seals for flanged and sandwich designs to prevent deposits or blockages in process connections
clip between process flange and diaphragm seal

Features
The material gathered on the front side of the diaphragm can be discharged from the hole on the side of the flushing ring
The pressure chamber can be relieved by the hole in the flushing ring
Depending on the process connection flange, flushing rings of different forms and widths are available

Description
Process Connector
Flange DN 50, 80, 100, 125 or NSP 2", 3", 4", 5" PN 16 ... 100 or grade in accordance with EN 1092-1 and ASME B 16.5 150 ... 600

Material
316L Stainless Steel

Sealing surface
Form B1 in accordance with EN 1092-1 RF 125 ... 250 AA in accordance with ASME B 16.5

Flush ring connection
½" NPT internal thread (without screw plug)

Install
The flushing ring is clamped between the process flange and the diaphragm seal and sealed with standard sealing elements (sold separately).

Material
1.4571, 1.4404, 1.4435 and 1.4541 stainless steel, Hastelloy B2, C4, C276, Monel 400, nickel and titanium (also available in other materials)
has a certificate of accreditation in accordance with EN 10 204-3.1 B

Sealing surface
RFSF, 500 AA and 125 AA in accordance with EN 1092-1 Type B2 or ASME B 16.5 Standard
Conforms to EN 1092-1 Type C (tongue type) and Type D (groove type)
RJF (ring groove sealing surface) in accordance with ASME B 16.5
Other forms of sealing surface available upon request

Flush ring connection
G ½",G ¼",¼" NPT internal thread
½" NPT, G ½ B, G ¼ B and ¼" NPT external thread
With screw plug, 316L stainless steel material