Product Description; Construction; Description; Function - Gemü Rsk Betriebsanleitung

3 Product description

In cases of uncertainty:
19. Consult the nearest GEMÜ sales office.
3 Product description

3.1 Construction

5
4
3
2
Item Name
1 Body
2 Disc
3 Seal (O-ring)
4 Spring
5 Screws
6 Eye bolt

3.2 Description

GEMÜ RSK is a plastic check valve with integrated flange seal.
The valve body, disc and seal are available in various materi-
als.
The GEMÜ RSK is clamped between two flanges during in-
stallation. The centring is based on the outside diameter of
the housing

3.3 Function

This product is used to transport liquid and gaseous fluids.
The product is not suitable for solids.
The flow of fluid causes the disc 2 in the check valve to open.
Check valves therefore need a low opening pressure. The res-
ulting opening force moves the check valve against the spring
4 and the weight force of the disc 2 so that the medium is re-
leased. In the event of failure (e.g. pump failure) or backflow
of the medium, the valve closes automatically.
To potentially achieve higher flows, special flange adaptors
are provided which enable the valve to have a larger opening
angle. If the outlet pressure exceeds the inlet pressure, the
check valve closes and creates a seal against the medium us-
ing the O-ring. The valve is sealed off from the outside via the
O-ring. It is therefore recommended that flange sleeves with
smooth sealing surfaces be used.
GEMÜ RSK
6
3
1
Materials
PVC-U grey, PP, PVDF
PVC-U grey, PP, PVDF
NBR, EPDM, FKM, PTFE (encapsu-
lated)
1.4571, Hastelloy
PVC-U grey, PP, PVDF
1.4571

3.4 Pressure test

The check valve is tested for leak-tightness using air or water
at the factory in a pressure test.
Reactions of the working medium with
test medium residues!
▶ Damage to the check valve
●
The following must be observed when performing a system
pressure test on the plant:
Valve pressure exceeded!
▶ Risk of injury!
●

3.5 Product label

Design in accordance with order data
RSK010012555F0
88517314
Fritz-Müller-Str. 6-8 PS 16 bar
D-74653 Ingelfingen
12000-3
Item number

4 Correct use

Danger of explosion!
▶ Risk of death or severe injury
●
Improper use of the product!
▶ Risk of severe injury or death
▶ Manufacturer liability and guarantee will be void.
Only use the product in accordance with the operating
●
conditions specified in the contract documentation and in
this document.
The product is designed for installation in piping systems and
for controlling a working medium.
The product is not intended for use in potentially explosive
areas.
34 / 60
CAUTION
Make sure that the contact surfaces of
the valve are clean.
WARNING
Ensure that during the system pres-
sure test, the pressure does not ex-
ceed 1.5 times the maximum permiss-
ible pressure of the check valve.
Device-specific data
Order-specific data
1002877963 Pos. 20
DN50 PN 6-40
Tmax. 120° C
S.Nr.: 0028 02/20
Serial number Year of manufacture
DANGER
Do not use the product in potentially
explosive zones.
WARNING
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