Raised Face vs Flat Face Flange Selection for Industrial Piping Standards

The flange is very important in industrial piping. Flanges play a key role in joining pipes, valves, pumps and other equipment to ensure everything operates safely and smoothly. There are two popular styles of flanges which are widely used in factories, plants and hydraulic systems, flat face (FF) and raised face (RF). Each seals and fits in a different way around pipes. Choosing the right one can save you time and money — and prevent leaks. Here we let you know what differentiates these two flanges and where to find high-quality ASME B16.5 Flanges for large orders. Here at TOBO GROUP, our flange solutions guarantee just the right product to meet your requirements. 

What Is Raised Face And Flat Face In Flanges? 

Raised face vs. Flat face Raised face and flat face flanges are very similar but serve a different purpose. A raised face flange features a small portion that projects 1/16 beyond the same plane as the other points of contact. It is this raised ring that the gasket sits on in order to form a tight seal between two flanges. The small raised area helps focus pressure on the gasket so that the seal is more secure. These flanges are in high-demand as they can withstand very high pressure and temperatures. It is employed in various industries, including oil and gas and chemical plants where leaks could be hazardous. Flat flanges, flat face flanges are flat all around the ends. The gasket bears on the entire flange face. This design is commonly known as using flat face flanges and can be beneficial in pipes that connect to equipment where the equipment would be damaged by blind flanges with protruding rims (such as pumps, valves). Flat face flanges are suitable up to 137 BAR and are less expensive than raised flange connections. But they don’t take to high pressure, or heat, as well as raised face flanges. For instance, if the system you are designing is going to be a water-based system with low pressure, flat face flanges may suffice. But in a steam line with high temperature, RF flanges are safer. Which to use depends on what kind of piping system you have, the pressures involved, the temperatures and what those fittings are connecting. TOBO GROUP will help you make the right choice, providing flanges that are suitable for a wide of industrial applications – ensuring your system remains safe and dependable. 

Where to Purchase Raised Face and Flat Face Flanges in High-Quality for Large Orders

It is not always easy to locate quality raised face and flat face flanges in regular, large quantities. You want flanges that fit, wear and cause no trouble. It is definitely very, very important that it comes from a reliable source. Specification: Product name: Flange Size: As pictures shown Material: rubber Package included 1 x flange Note： Due to manual measurement, please allow 0-3mm error. We manufacture our flanges in large quantities so you can get everything you need at one time and save money. Our flanges undergo stringent metal surface treating and inspection to ensure a perfect fit. For instance, we use top grade metals and pressure- and durability-test the flanges before they leave. “When businesses come to us, they get flanges that never leak and work well even in harsh conditions. Another advantage, TOBO GROUP can make flanges according to your special requests if your pipes are require it. That means no hunting for individual parts from someone else. We manage the entire order responsibly, from producing the flanges to delivering them on time. Customers come to us for their factories and plant equipment for a reason: we do what we say. If you have a big project or need to replace a lot of flanges, this is for sure. The raised face and flat face flanges from TOBO GROUP are already prepared to make your piping system work hard, without delays or added costs! 

Common Pitfalls in Choosing RF or FF for Piping Systems

When it comes to working on pipes in large factories or building, having the right flange is crucial. Flanges are attachments used to connect pipes so that liquids or gases can pass through them without leaking. Flanges come in raised face and flat face designs. They each have their purposes, but choose the wrong one and you might find yourself in trouble. The flange type does not meet the pipe material One of the common issues that can lead to this problem is mismatched flange type and pipe material. For instance, raised face flanges works nicely on the heavier duty pipes such as steel but if used on a softer pipe liner like copper (like what’s in your home), it can actually damage the pipe. The minimum pressure rating for a flat face flange is typically 58 psi, resulting in the potential for leaks if used on high-pressure systems. Another issue is the failure to test the pressure of the system. Raised face flanges are popular with high-pressure systems as the seal is formed by the seating of the gasket on the ‘raised’ flat face of the flange. In low-pressure systems, the flat face flange will work best. If you’re using flat face flanges in a high pressure system, it might cause the seal to fail. And flange size is crucial, too. If this flange is too large or small for the pipe, it will not fit correctly and could develop openings or cracks. When customers are buying flanges, TOBO GROUP would remind the customer to pay attention the these details. This will prevent expensive leaks and maintain safer pipes. Lastly, the gasket can be forgotten at times. A gasket is a soft, rubber or metal ring used to prevent leaks between two flanges. Raised face flanges require a special type of gasket with matching raised surface, whereas flat face flanges can use a flat gasket. Mismatching gasket with the wrong flange could lead to weak or no sealing effects. This is why a knowledge of the two flange types and their purposes guides better choices for your systems pipeline. 

How Flat Face Flanges Increase Sealing in Low-Pressure Wholesale Jobs

Flat face flanges are basic and confident when used in large projects where pressure is not too high! Flat face flanges also facilitate good seals in low-pressure applications such as water supply or air systems inside factories, and save money. The Flat face weld neck flange work well in this application since their surface is flat all around. This allows the gasket to sit flat and even between the two flanges, which can makes it easier to stop leaks. Since the pressure is minimal, there is less for the gasket to be pushed out or damaged. Flat face flange another advantage of flat face flanges is that installing and aligning it with pipes is much easier. This means saving time in construction, and that is very important for wholesale projects where many pipes should be mounted as soon as possible. Flat face flanges are also more suitable for cast iron or plastic pipes because such materials can be easily mangled by a raised face flange. At TOBO GROUP, we see a lot of customers who opt for flat face flanges for this exact reason. They achieve a dependable seal without needing to invest in special gaskets or stronger pipes. And because face flanges are usually flat, they are typically lighter, making them easier to handle and ship. This is significant for large projects during which numerous flanges are required. This concludes that flat face flanges are the wise choice for use in a mass low-pressure system. It seals well, guards the pipes and is cost-effective. Flat Face Flanges with neck are made for special cases and to avoid occurance of any deformation. TOBO GROUP believes in using the best and right kind of product, thus, flat face flanges prove to be excellent options for long term low pressure industrial piping requirements. 

How to Prevent Leakages of Raised Face and Flat Face Flanges while Using Them in Industries

Leaky piped systems can have major downsides in terms of damage, waste and danger. To prevent leaks, however, the proper flange should be used and the correct steps followed. Raised face and flat face flanges have paths to prevent leakage when correctly used. First, make sure to select the proper flange for your pressure and pipe type. Raised face flanges are ideal for high pressure process piping, their raised face provides a tight and efficient seal when bolted down with proper tension. American flat face flanges are best for low pressure or softer material pipes. At TOBO GROUP, we advise our clients to pay close attention before installing. Next, the gasket is super important to be leak proof. Confirm that the gasket fits the type of flange. ANY RING TYPE GASKET OF SUFFICIENT THICKNESS WITH CORRECT DIMENSIONS FOR THE FOLLOWING RAISED FACE FLANGES. Flat face flanges are for use with flat gaskets. The seals will leak if you have the wrong gasket, even with a good flange. The bolts that beadlock the flanges together also must be evenly torqued to properly crush them. Too loose and the seal can fail. If bolts are too tight, they can break the flange or gasket. TOBO GROUP offers some guidance and tools to help workers tighten bolts as directed. Another suggestion is to thoroughly clean the flange faces before mating the gasket and flange together. The space can be the site of leaks when dirt or rust creates gaps. Finally, check the flanges and gaskets every so often. And parts can wear out, and even get damaged. Installing worn gaskets, and ensuring that bolts are checked, help the system safely operating and free from leaks. Following these do’s can help prevent leaks & maintain good light fittings and save your budgets. TOBO GROUP is committed to helping customers learn how to use raised face and flat face flanges correctly in order to prevent leaks and protect themselves.