Product Name | Spectacle Blind Flange | ||||||
Size | 1/2"-24" DN15-DN600 | ||||||
Pressure | CLASS150,CLASS300,CLASS600,CLASS900,CLASS2500 | ||||||
Standard | ASME B16.48 ASME, ANSI,DIN, BS,JIS,EN | ||||||
Wall thickness | 3mm-111mm | ||||||
Material | Carbon Steel: A105, A350LF2, S235Jr, S275Jr, St37, St45.8, A42CP, A48CP, E24 , A515 Gr60, A515 Gr 70 etc. | ||||||
Stainless Steel: A182F304/304L, A182 F316/316L, 904L, and etc. | |||||||
Facing | RF; RTJ; FF; FM; M; T; G; |
ASME B16.48 is a blind flange standard developed by the American Society of Mechanical Engineers (ASME), suitable for various types of piping systems. Among them, the spectacle blind flange in ASME B16.48 is a special type of blind flange.
The spectacle blind flange, also called octagon blind flange, is composed of two octagon blind flanges, which are fastened together by bolts and gaskets in the middle. The difference between the spectacle blind flange and other types of blind flanges is that it can provide higher pressure resistance and sealing performance, suitable for various high-pressure gas and liquid pipeline systems.
Size and pressure rating
According to ASME B16.48 standard, the size range of the spectacle blind flange is from 1/2 inch to 24 inch, and the pressure rating can reach Class 150 (PN20), Class 300 (PN50), Class 600 (PN100), and Class 900 (PN150).
Application scope
ASME B16.48 spectacle blind is a special type of blind used in pipeline systems, mainly used for the installation, maintenance, and testing of valves, pumps, instruments, flanges, and other equipment.
Specifically, ASME B16.48 spectacle blinds are applicable to the following aspects:
1. Flange connection: This blind plate is connected to the flange and can be used when repairing or replacing equipment in the pipeline system. It can serve as a temporary sealing element to prevent fluid leakage for equipment maintenance or replacement.
2. Equipment installation: This blind plate can also be used for the installation of new equipment. When there is no equipment in the pipeline system but equipment needs to be installed, this blind plate can temporarily seal the pipeline until the equipment installation is completed and connected to the pipeline system.
3. Pressure testing: This blind plate can also be used for pressure testing of pipeline systems. Before conducting pressure testing on the pipeline system, it is necessary to close all valves and use this blind plate to establish a closed system in the pipeline system to prevent accidental leakage during pressure testing.
In summary, ASME B16.48 spectacle blind is a multifunctional pipeline accessory that has wide applications in pipeline system maintenance, equipment installation, and pressure testing.
Advantages and disadvantages
Advantages include:
1. Strong pressure resistance: Compared to other types of blind flanges, the spectacle blind flange can provide higher pressure resistance and is suitable for various high-pressure gas and liquid pipeline systems.
2. Good sealing performance: because it is composed of two octagon blind plates, which are fastened together by bolts and gaskets in the middle, the spectacle blind flange has good sealing performance and can effectively prevent leakage and pollution.
Disadvantages:
1. High cost: Compared to other types of blind flanges, the cost of spectacle blind flanges is relatively higher.
2. Installation and maintenance are relatively complex: The installation and maintenance of the spectacle blind flange requires more tools and labor, which is relatively complex.
Overall, ASME B16.48 spectacle blind flange is a high-performance blind flange suitable for various high-pressure gas and liquid pipeline systems, with advantages such as good pressure resistance and sealing performance.
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Packing & Shipment
1.Professional manufactory.
2.Trial orders are acceptable.
3.Flexible and convenient logistic service.
4.Competitive price.
5.100% testing,ensuring the mechanical properties
6.Professional testing.
1.We can guarantee the best material according to related quotation.
2.Testing is performed on each fitting before delivery.
3.All packages are adapt for shipment .
4. Material chemical composition is conformed with international standard and environment standard.
A) How can I get more details about your products?
You can send an email to our email address. We will provide catalogue and pictures of our products for your reference.We can also supply pipe fittings, bolt and nut, gaskets etc. We aim to be your piping system solution provider.
B) How can I get some samples?
If you need, we will offer you samples for free, but new customers are expected to pay express charge.
C) Do you provide customized parts?
Yes, you can give us drawings and we will manufacture accordingly.
D) To which country have you supplied your products?
We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru , Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.).
E) I can’t see the goods or touch the goods, how can I deal with the risk involved?
Our quality management system conforms to the requirement of ISO 9001:2015 verified by DNV. We are absolutely worth your trust. We can accept trial order to enhance mutual trust.