Operating Manual
RIFOX - Hans Richter GmbH Spezialarm
aturen
Fon: +49 (0) 421 499 75 - 0
www.rifox.de
contact@rifox.de
Breite: 170
Höhe:8,15
1 Safety instructions
1.1 Proper use
Any improper use, intervention in the design and deviation from the design data automatically lead to termination of the
warranty. The fl oat-controlled condensate trap is designed for the discharge of condensate from steam, compressed air and
pressure gas systems. Any other usage is not permitted. The manufacturer is not liable for damage resulting from any other
usage. The user or operator bears the risk in this case. This also applies analogously to incorrect assembly, start-up, use and
maintenance.
1.2 Warnings and symbols
■ Personal risk due to escaping operating medium because of pressure, temperature and weight. Failure to comply with
these warnings results in the risk of accidents.
■ Follow the instructions in this operating manual.
■ The operator must ensure that this operating manual and, if necessary, other relevant documents are available on site.
■ Only trained or instructed personnel may be assigned to handling this equipment.
■ Any mode of operation that may impair safety must be avoided.
Model: 1550 / 1550-N
Model: 1551 / 1551-N
RIFOmat - Float Controlled Trap, PN160
2 General description and usage
2.1 Design of the condensate trap
Picture 1: WU-1550
WU-1550-N
Picture 2: EF-1551
EF-1551-N
Upper housing
1
Gasket for Housing
2
Lower housing
3
Control screw
4
Housing tension bolt
5
Screw plug
6
Float control assembly
7
Bertha-von-Suttner-Str. 9 D-28207 Bremen
Supporting body assembly
8
Float
9
Supporting screw
10
Gasket
11
Gasket
12
Gasket
13
Protecting cap
14
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07/2019 -Di. Subject to modifi cations
Operating Manual
RIFOX - Hans Richter GmbH Spezialarmaturen
Fon: +49 (0) 421 499 75 - 0
www.rifox.de
contact@rifox.de
Breite: 170
Höhe:8,15
2.2 Operation limits of housing material (Design)
Version P250GH: (for WU-1550, EF-1551)
Max. operating pressure (bar g)
Max. operating temperature (°C )
Version 13CrMo4-5: (for WU-1550, EF-1551)
Max. operating pressure (bar g)
Max. operating temperature (°C )
Version 10CrMo9-10: (for WU-1550, EF-1551)
Max. operating pressure (bar g)
Max. operating temperature (°C )
Version 1.4571: (for WU-1550-N, EF-1551-N)
Max. operating pressure (bar g)
Max. operating temperature (°C )
2.3 Function limit of control units (for all four versions)
Cross Section Max. Line Pressure (bar g)
Ia
Ib
Ic
III
IV
160 148,5 133,3 110,4 95,2
-10/20 100 200 300 400
160 144 134 108 24
until 300 400 450 490 550
160 148 140 125 34
until 300 400 450 470 550
160 149 133 124
100 200 300 400
85
80
65
40
35
2.4 Performance (for all four versions)
for Model 1550/1551
4000
1000
100
10
Flow rate in kg/h
Pressure difference in bar (with reference to atmospheric pressure)
For the cold condensate the discharge capacity is
higher because of medium temperature and density.
2.5 Function / venting / gas compensation
■ Due to the gravity the condensate flows downwards to the lowest point, which is the condensate trap housing. In the
lowest position of the float the outlet cross-section is close. Rising of the liquid level lifts the float and opens the outlet.
Condensate will be discharged through the upturned immersion tube. Decreasing condensate level closes the outlet again.
■ In the case of steam applications, automatic venting must be provided (vent jet).
■ To get the proper function of the float control assembly in applications of pressure gases, the gases in the condensate
trap housing must be led into the gas chamber with the same operating pressure above the condensate trap (pressure
compensation). For this purpose the control screw (4) in models 1550 and 1550-N can be replaced by a cutting ring union
and a compensating line leading upward can be installed. The pressure compensation for the models 1551 and 1551-N is
not strongly recommended.
■ In the case of pressure gases applications, a gastight under-level float control is nearly exclusively used (if necessary,
consult Rifox)
Page 2 of 5
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0010111,0
Picture 3
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for Model 1550-N/1551-N
10000
5000
1000
100
10
Flow rate in kg/h
Pressure difference in bar (with reference to atmospheric pressure)
For the hot condensate the discharge capacity is
lower because of medium temperature and density.
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160
0010111,0
Picture 4
Operating Manual
RIFOX - Hans Richter GmbH Spezialarmaturen
Fon: +49 (0) 421 499 75 - 0
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contact@rifox.de
Breite: 170
Höhe:8,15
3 Assembly
The condensate trap has to be screwed into a pipeline between flanges.
■ Remove the flange transport caps from inlet and outlet.
■ Fitting direction: according to Picture 1 and 2.
■ Supporting brackets: The weight of the condensate trap must be taken up by a holding device and support, e.g. via the
retaining brackets welded onto the housing. The steam trap weight from 68 to 76 kg, depending on the connection sizes.
■ To avoid downtimes, it is recommended to install stop valves with bypass to pipeline, both in front of and behind the condensate trap.
4 Start-Up
Shut off the float-controlled condensat trap on both sides during the strength tests, because the control unit is not suitable
for the design test pressure according to the nameplate.
The pressure build-up and heating-up of the housing should not take place abruptly. If leakage is detected after the first
inspection, the screws (4 / 5 / 6 / 10) can be fixed under consideration of the given torque moments, as given in Section 6.5.
The screws can only be tightened on when the housing is unpressurized and T<50°C.
5 Monitoring and checking
5.1 Function‘s failures
The function’s failures can be observed either as condensate blockage or as steam / gas leakage.
■ Condensate blockage can be determined:
a) with the control screw (4): loosen the control screw (4) by only a quarter turn. If condensate escapes, condensate blockage
exists. Or,
b) only in steam applications: with a surface thermometer to check the housing temperatur before the inlet. If under cooling
is detected, there is condensate blockage. (if necessary, consult with Rifox).
■ Gas leakage can be determined with an RIFOX-ultrasonic measuring device.
■ Steam leakage (near saturated steam temperatur) can be determined with an surface thermometer on the housing outlet.
■ Check the float control assembly according to section 6.2 and replace if required (if necessary, consult Rifox).
5.2 Submerged gastight control unit
■ For submerged gastight control unit: Gas leakage can be visually determined by connecting the trap outlet with a filled
condensate tank.
■ To get the absolute gas tightness, it is required that there must be permanently minimal condensate level in the condensate trap. The condensate trap must be filled with water before start-up.
■ To ensure durable gas tightness, it is required that the condensate is continually gathered into the steam trap. If there is
no condensate be gathered in hours or days, the gas may leak, although the rotary slide ventil is closed.
■ If the condensate level drops under the rotary slide valve, the gas tightness is no longer guaranteed.
6 Maintenance / Inspection
6.1 Opening the steam trap and dismantling the float control assembly
■ The condensate trap must be depressurized. Shut off the system securely in front of and behind of the condensate trap.
■ Release any remaining pressure in the housing by loosening the control screw (4) by only a quarter turn.
■ The condensate trap must not be dismantled from the pipeline system.
■ Loosen the housing tension bolts (5) evenly crosswise. Put down the lower housing (3).
■ Loosen the protecting cap (14) and put it down.
■ Loosen the supporting screw (10) by 1 to 2 turns.
■ With a few light strokes using plastic hammer on the front side of the supporting screw (10) to loosen the float control
assembly (7) from its conic housing seat.
■ Screw out the supporting screw (10) and take out the float control assembly (7).
Bertha-von-Suttner-Str. 9 D-28207 Bremen
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07/2019 -Di. Subject to modifications
Operating Manual
RIFOX - Hans Richter GmbH Spezialarmaturen
Fon: +49 (0) 421 499 75 - 0
www.rifox.de
contact@rifox.de
Breite: 170
Höhe:8,15
6.2 Disassembling, cleaning, checking and assembling the float control
assembly (Picture 5)
■ After removing the cotter pin (p), the rotary slide valve (v) can be simply
pulled out to the side.
■ Clean the parts using, for example, benzine.
■ Check the rotary slide valve (v) for wear along the sealing edge. If wear is
detected, the support body (b) and the rotary slide valve (v) must be replaced
together.
■ During assembly ensure that the notch on the rotary slide valve (v) points
to the punch mark on the support body (b) and the cotter pin (p) is inserted
and secured again carefully.
■ It must be able to move the float up and down easily by hand.
6.3 Install the float control assembly and assemble the steam trap
■ The float control assembly (7) is inserted into the conical housing seat with the support body. It must be ensured that the
tube is positioned vertically downwards.
■ Screw in the supporting screw (10) with its gasket (11), tighten it with a standard ring wrench. Tightening torque according
to Section 6.5.
■ Screw in the protecting cap (14) and tighten it.
■ Check the housing gasket (2), replace it it is damaged.
■ Put on the lower housing (3). Tighten the housing tension bolts (5) evenly crosswise. Tightening torque according to Section
6.5.
b
p
v
Picture 5
6.4 Care and maintenance
■ In the case of a great risk of dirt accumulation, the housing, when it is depressurized, should be rinsed thoroughly from
time to time. If necessary, the float control assembly (7) should also be checked according to Section 6.2.
■ The dirt, which has been accumulated in the housing, can be removed away by screwing off the screw plug (6).
■ For special applications, it is advisable to install a separate upstream strainer.
■ The float control assembly (7) usually does not to be special maintained. To inspect the float control assembly at intervals
ensures the smooth operation and save the resources. See Section 6.1 and 6.2.
6.5 Tightening torque
Position Part Name Tightening Torque
4 Control screw
5 Housing tension bolt 70 Nm
6 Screw plug
10 Supporting screw 25 Nm
For gasket from soft iron: 25 Nm
For gasket from 1.4571: 20 Nm
For gasket from soft iron: 80 Nm
For gasket from 1.4571: 30 Nm
Page 4 of 5
-Di. Subject to modifications
Bertha-von-Suttner-Str. 9 D-28207 Bremen
07/2019
Fax: +49 (0) 421 499 75 - 40
www.rifoxglobal.com
sales@rifoxglobal.com
Operating Manual
RIFOX - Hans Richter GmbH Spezialarm
aturen
Fon: +49 (0) 421 499 75 - 0
www.rifox.de
contact@rifox.de
Breite: 170
Höhe:8,15
6.6 Spare parts
Only original spare parts can be used.
Picture 6: WU-1550
WU-1550-N
Upper housing
1
Gasket for Housing
2
Lower housing
3
Control screw
4
Housing tension bolt
5
Screw plug
6
Float control assembly
7
Supporting body assembly
8
Float
9
Supporting screw
10
Gasket
11
Gasket
12
Gasket
13
Protecting cap
14
7 Conformity assessment
Picture 7: EF-1551
EF-1551-N
Version P250GH Version 13CrMo4-5 Version 10CrMo9-10 Version 1.4571
P250GH 13CrMo4-5 10CrMo9-10 1.4571
1.4571 1.4571 1.4571 1.4571
P250GH 13CrMo4-5 10CrMo9-10 1.4571
1.4571 1.4571 1.4571 1.4571
21CrMoV5-7 21CrMoV5-7 21CrMoV5-7 A4-70 / A4
1.4571 1.4571 1.4571 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4571 1.4571 1.4571 1.4571
1.4571 1.4571 1.4571 1.4571
1.4571 1.4571 1.4571 1.4571
Soft iron 1.4571 1.4571 1.4571
Soft iron 1.4571 1.4571 1.4571
1.4571 1.4571 1.4571 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4112/ 1.4057/
1.4301 or
complete 1.4571
1.4571
1.4571
The pressure equipments 1550 / 1550-N / 1551 / 1551-N are in accordance with the Pressure Vessel Directive 2014/68/EU.
The conformity is verifi ed through the identifying mark: CE0525.
A detailed declaration of conformity assessment according to PED is available as separate document. Please request if
necessary, if not attached.
Model 1550/1551 in 13CrMo4-5 or 10CrMo9-10 is not applicable for media of fl uid group 1.
Bertha-von-Suttner-Str. 9 D-28207 Bremen
Fax: +49 (0) 421 499 75 - 40
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07/2019 -Di. Subject to modifi cations
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