Spring-loaded lift check valve - Z 16 117-616 PN 16


Installation
The valve can be installed in horizontal or vertical pipeline.

Operation
The valve is self-acting, using the pressure of the service fluid on
the disc, which closes to prevent reverse medium flow.

Application
Self-acting valve which prevents reverse flow
of the service fluid, for use with water, steam,
on special request also for other non-
aggressive liquids and gases for service
pressures and temperatures:


The lowest working overpressure is
0,08 MPa. If tightness is required, it is
necessary to install into pipeline also a shut-
off valve, besides the check valve.

Technical description
The valve is bonnet type. Closing disc is
guided loose in the bonnet and pressed into a
rolled seat by a spring. Flow direction in the
valve is from under the disc.

Connecting and face-to-face dimensions
Flange connecting dimensions as per
ÈSN 13 1060, DIN 2501.Face-to-face
dimensions as per ÈSN EN 558-1, line 1.
Flange faces as per ÈSN 13 1061, DIN 2526.
Basic face-to-face and connecting dimensions
are given in the table.

Material
Body, bonnet grey cast iron (42 2420)
Disc to DN 50 stainless steel (grade 17)
Disc from DN 65 carbon steel with overlay
(13 Cr)
Seat stainless steel (grade 17)
Spring up to DN 50 stainless steel wire
Spring from DN 65 carbon steel wire

Testing
The valve is tested as per ÈSN 13 3060, part 2,
DIN 3230.

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