Sight Glass(Type:Flapper Type)
A sight glass is a device installed partway down a pipe to enable an external visual check through a glass window of the approximate condition of fluids running inside the pipe or tank. Generally, this product is used to check the dryness of liquefied refrigerant gas. Other products are more elaborate, with som
A sight glass is a device installed partway down a pipe to enable an external visual check through a glass window of the approximate condition of fluids running inside the pipe or tank. Generally, this product is used to check the dryness of liquefied refrigerant gas. Other products are more elaborate, with some types that facilitate the checking of the fluid flow by oscillating a ball (float) or opening and closing a flapper. A lantern type that enables fluid flow checking from all 360° directions is also available. Various connection methods are used compatible with different pipes and tanks, including flange connection, wall welding, screw-in connection, butt welding and socket welding. Reinforced glass is sometimes used for the glass area depending on the application. However, since deterioration and abrasion of this glass cannot be avoided, it must be replaced approximately every year with a new part to prevent accidents caused by glass damage.

Brand |
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CAD |
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Days to Ship |
- All
- 4 Day(s) or Less
- 6 Day(s) or Less
- 7 Day(s) or Less
- 8 Day(s) or Less
- 9 Day(s) or Less
- Others
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Flapper Type Sight Glasses GFAF
WASHINOKIKI
The flapper (metal plate) is retained by spring and moves in response to the flow, allowing the flow of the fluid to be visually checked.[Features]· Glass wear prevention: If using in locations such as steam drains, embedding the mica sheet to the interior surfaces helps prevent glass exhaustion.
Flapper Type
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Water / Steam
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Flange
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15A ~ 50A
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Cast Iron
|
150
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-
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From:
5,149,931 VND
|
Days to Ship:
Số ngày giao hàng:
10 Day(s) or more
|

10 Day(s) or more
-
Sight Glasses 150F-13S Series
YOSHITAKE
[Features]・ With the flap and indicator plate, you can easily check the change in flow rate・ It can be mounted to both horizontal and vertical piping・ The pressure loss due to the flow is as small as 0.01 MPa even when the maximum flow rate is indicated, and does not affect the fluid pressure・ For steam condensate, It comes with mica plate・ A wide selection of cast iron and stainless steel materials are available according to the application
- CAD :
- 2D
Flapper Type
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Water / Oil / Others
|
Rc
|
15A ~ 50A
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Stainless
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150
|
-
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From:
5,506,750 VND
|
Days to Ship:
Số ngày giao hàng:
10 Day(s) or more
|

10 Day(s) or more
-
Sight Glasses SF-1F Series
YOSHITAKE
Fluctuations in the flow rate can be easily checked using the flapper and indicator plate. Can be used with both vertical and horizontal pipes.
- CAD :
- 2D
Flapper Type
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Water / Oil / Others
|
Flange
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15A ~ 40A
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Cast Iron
|
150
|
-
|
From:
3,401,260 VND
|
Days to Ship:
Số ngày giao hàng:
10 Day(s) or more
|

10 Day(s) or more
-
Sight Glass, SF-1S Series
YOSHITAKE
Fluctuations in the flow rate can be easily checked using the flapper and indicator plate. Can be used with both vertical and horizontal pipes.
- CAD :
- 2D
Flapper Type
|
Water / Oil / Others
|
Rc
|
15A ~ 50A
|
Cast Iron
|
150
|
-
|
From:
1,997,250 VND
|
Days to Ship:
Số ngày giao hàng:
4 Day(s) or more
|

4 Day(s) or more
-
From:
5,346,206 VND
|
Days to Ship:
Số ngày giao hàng:
4 Day(s) or more
|

4 Day(s) or more
-
Sight Glasses 150F-F/150F-13F Series
YOSHITAKE
[Features]・ With the flap and indicator plate, you can easily check the change in flow rate・ It can be mounted to both horizontal and vertical piping・ The pressure loss due to the flow is as small as 0.01 MPa even when the maximum flow rate is indicated, and does not affect the fluid pressure・ For steam condensate, It comes with mica plate・ A wide selection of cast iron and stainless steel materials are available according to the application
- CAD :
- 2D
Flapper Type
|
Water / Oil / Others
|
Flange
|
15A ~ 150A
|
Cast Iron / Stainless
|
150
|
-
|
From:
10,553,250 VND
|
Days to Ship:
Số ngày giao hàng:
10 Day(s) or more
|

10 Day(s) or more
-
Stainless steel flapper type sight glasses GKF13F/GKF14F
WASHINOKIKI
The flapper (metal plate) is retained by spring and moves in response to the flow, allowing the flow of the fluid to be visually checked.[Features]· Glass wear prevention: If using in locations such as steam drains, embedding the mica sheet to the interior surfaces helps prevent glass exhaustion.
Flapper Type
|
Water / Steam
|
Flange
|
15A ~ 50A
|
Stainless
|
150
|
-
|
From:
11,974,750 VND
|
Days to Ship:
Số ngày giao hàng:
10 Day(s) or more
|

10 Day(s) or more
-
Double-sided glass fluoroscopic sight glass (trap tester) T3 type
MIYAWAKI
[Features]・ Useful for checking the flow state of various fluids・ Since the flapper is installed, you can see the situation well even if you swing it・ The body material is cast steel and has excellent durability・ Easy maintenance[Applications]・ Attach it to the secondary side (outlet side) of the trap and use it through a glass window to observe, etc., the operation of the trap
Flapper Type
|
Water / Oil / Steam / Others
|
Rc
|
15A ~ 50A
|
Cast Iron
|
183
|
N/A
|
From:
3,472,356 VND
|
Days to Ship:
Số ngày giao hàng:
20 Day(s) or more
|

20 Day(s) or more
-
Stainless Steel Screw-In Type Sight Glass
3M_INDUSTRY
Used for checking the presence of fluids or checking different mixtures of fluids within pipeline systems. Also used for visually checking changes in flow rates in flapper type and ball type sight glasses, etc. All sizes are also available with a protective cover. ■ Perspective Type: A simple structure suitable for visually checking colored liquids. ■ Flapper Type: Allows you to check fluids by the degree to which the flapper is open or closed. ■ Ball Type: Allows you to check fluids by the movement of the ball. The PTFE ball specification can be used at temperatures of up to 100°C. ■ Nozzle Type: Allows you to see how the fluid is running off.
Flapper Type
|
Water
|
Rc
|
50A
|
-
|
150
|
N/A
|
From:
24,917,801 VND
|
Days to Ship:
Số ngày giao hàng:
24 Day(s) or more
|

24 Day(s) or more
|
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BrandNhãn hiệu |
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Product SeriesDòng sản phẩm |
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CADCAD |
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From |
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Days to ShipSố ngày giao hàng |
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Type
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Applicable Fluid
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Connection Type
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Nominal Diameter
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Body Material
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Maximum Operating Temperature(℃)
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Lining / Coating
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BrandNhãn hiệu | WASHINOKIKI | YOSHITAKE | YOSHITAKE | YOSHITAKE | WASHINOKIKI | YOSHITAKE | WASHINOKIKI | MIYAWAKI | 3M_INDUSTRY |
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Product SeriesDòng sản phẩm | Flapper Type Sight Glasses GFAF | Sight Glasses 150F-13S Series | Sight Glasses SF-1F Series | Sight Glass, SF-1S Series | Stainless Steel Flapper-Type Sight Glass, GKF13S/GKF14S | Sight Glasses 150F-F/150F-13F Series | Stainless steel flapper type sight glasses GKF13F/GKF14F | Double-sided glass fluoroscopic sight glass (trap tester) T3 type | Stainless Steel Screw-In Type Sight Glass |
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CADCAD | | | | | | | | | |
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From |
5,149,931 VND
|
5,506,750 VND
|
3,401,260 VND
|
1,997,250 VND
|
5,346,206 VND
|
10,553,250 VND
|
11,974,750 VND
|
3,472,356 VND
|
24,917,801 VND
|
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Days to ShipSố ngày giao hàng |
10 Day(s) or more
|
10 Day(s) or more
|
10 Day(s) or more
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4 Day(s) or more
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4 Day(s) or more
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10 Day(s) or more
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10 Day(s) or more
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20 Day(s) or more
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24 Day(s) or more
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Type | Flapper Type | Flapper Type | Flapper Type | Flapper Type | Flapper Type | Flapper Type | Flapper Type | Flapper Type | Flapper Type |
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Applicable Fluid | Water / Steam | Water / Oil / Others | Water / Oil / Others | Water / Oil / Others | Water / Steam | Water / Oil / Others | Water / Steam | Water / Oil / Steam / Others | Water |
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Connection Type | Flange | Rc | Flange | Rc | Rc | Flange | Flange | Rc | Rc |
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Nominal Diameter | 15A ~ 50A | 15A ~ 50A | 15A ~ 40A | 15A ~ 50A | 8A ~ 32A | 15A ~ 150A | 15A ~ 50A | 15A ~ 50A | 50A |
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Body Material | Cast Iron | Stainless | Cast Iron | Cast Iron | Stainless | Cast Iron / Stainless | Stainless | Cast Iron | - |
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Maximum Operating Temperature(℃) | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 183 | 150 |
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Lining / Coating | - | - | - | - | - | - | - | N/A | N/A |
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Specification/DimensionsĐặc điểm kỹ thuật / Kích thướcĐặc điểm kỹ thuật / Kích thước
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Type
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Perspective Formula
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Flapper Type
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Ball Type
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Spinner Type
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Lantern Type
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Applicable Fluid
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Connection Type
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Nominal Diameter
- 8A
- 10A
- 15A
- 20A
- 25A
- 32A
- 40A
- 50A
- 65A
- 80A
- 100A
- 125A
- 150A
- 200A
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Body Material
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Cast Iron
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Stainless
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Copper
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Maximum Operating Temperature(℃)
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Lining / Coating
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