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Dual Line Metering Valve

Ⅰ . Overview SGQ series dual line grease feeder applies to the dual line grease concentrated lubricating system with PN of 10MPa as a unit of calculating grease feeding. For the acting force of pressure produced by alternate grease supply by two main supply pipelines, it is pushed by the...

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. Overview
 image002.jpgSGQ series dual line  grease feeder applies to the dual line grease concentrated lubricating system  with PN of 10MPa as a unit of calculating grease feeding. For the acting force  of pressure produced by alternate grease supply by two main supply pipelines,  it is pushed by the pressure to feed grease to piston and completes the  function of quantitatively distributing grease to each lubricating point.
 SGQ series dual line grease feeder has  unidirectional and bidirectional grease discharge structure forms. There is  only lower feeding hole in the feeder with unidirectional grease discharge  which supplies grease to each lubricating point in forward and adverse grease  discharge of piston; there are upper and lower feeding holes in the feeder with  bidirectional grease discharge which supply grease to each lubricating point  alternatively in forward and adverse grease discharge of piston. The working  condition of grease feeder can be observed from the movement of indicating rod,  and the grease feeding volume at each feeding mouth can be adjusted  conveniently through adjusting screws within the specified range.
 

. Technical parameters & Dimensions


     Model

Outlet    quantity

Nominal    pressure (MPa)

Flow of each outlet    (ml/cycle)

L

B

H

h

L1

L2

A

A1

Weight (kg)

Min

Max

SGQ-1

SGQ-11;    SGQ-21S

1

2

10

0.1

0.5

54

44

85

56

20

23

40

34

1.0

SGQ-21;    SGQ-41S

2

4

77

63

1.3

SGQ-31;    SGQ-61S

3

6

100

86

1.8

SGQ-41;    SGQ-81S

4

8

123

109

2.3

SGQ-2

SGQ-12;    SGQ-22S

1

2

0.5

2.0

55

47

99

62

20

25

41

40

1.1

SGQ-22;    SGQ-42S

2

4

80

66

1.7

SGQ-32;    SGQ-62S

3

6

105

91

2.2

SGQ-42;    SGQ-82S

4

8

130

116

2.8

SGQ-3

SGQ-13;    SGQ-23S

1

2

1.5

5.0

55

53

105

65

20

25

41

40

1.4

SGQ-23;    SGQ-43S

2

4

80

66

2.0

SGQ-33;    SGQ-63S

3

6

105

91

2.7

SGQ-43;    SGQ-83S

4

8

130

116

3.4

SGQ-4

SGQ-14;    SGQ-24S

1

2

3.0

10

58

57

123

77

20

30

44

52

1.8

SGQ-24;    SGQ-44S

2

4

88

74

2.9

SGQ-5

SGQ-15

1

6.0

20

88

57

123

77

50

-

74

52

2.9

Use  grease with minimum cone penetration 265(25℃,150g) 1/10mm (NLGI0#~2#). Working  environment temperature is -10~80℃.

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. Descriptions of model

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. Use  instruction

  1. Specified media should be used in specified  environment.

  2. Dust cover should be added when the feeder is  used in wet and severe environment with much dust.

  3. The two feeding mouths of grease feeder are  connected to two main pipelines respectively whose two sides are connected.  R3/8 screw plug should be used to plug a side of feeding mouth if not used.

  4. Parallel installation method is employed  preferentially in the system of grease feeder. The pipeline and distributor can  be connected either at the left side or the right side; in the next place it is  to employ series installation method and the number of feeders in series should  not be more than three.

  5. Feeder scaleboard is used preferentially to  install feeders. The surface contacting the feeder scaleboard should be smooth  and flat. It is not suggested to over tighten the installed screw bolt to avoid  severe deformation which may influence normal working.

  6. In order to adjust grease feeding volume, first  loosen the tightened screw on the restrictor and then adjust the screw.  Grease feeding volume can be adjusted within  the range of max and min feeding volume based on actual needs of lubricating  points. The adjustment work should be done when the indicating rod retracts.  Tighten the screw after adjustment is completed.

  7. The screw plugs at the two sides of feeder  piston should not be dismantled; in case of leakage, tighten the screw plug or  replace with a new seal ring.

  8. When the number of lubricating points is odd,  the separating parts in any one grease discharge hole can be dismantled and  then plug the upper grease discharge hole with a screw plug. It can be used  again.


. Resolution to common  faults

  1. Grease feeder does not work.
       Check if there is pressure grease delivered in the grease supply pipeline or  not; if grease unloading pipeline is unblocked or not; if lubricating point is  plugged or not; if impurities enter grease feeder. Resolve them after the  reason is found out and removed.

  2. Leakage at the indicating rod of restrictor.
       Dismantle the restrictor body, and check if seal ring has been used for a too  long time or it is used in an higher environmental temperature than specified  or not. Replace seal ring after the reason is found out.


. Ordering  instruction
 If grease feeder is to be used in an  environmental temperature higher than 80 °C, please specify it in the ordering  contract so that high temperature resistant seal ring will be provided.

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