High temperature rotary joint with different media

When purchasing rotary joints, it is known that the specific applicable model needs to be determined based on the operating parameters. Especially for high-temperature rotary joints, the applicable models vary depending on the medium used! During the customer inquiry process, SD rotary joints may also encounter some customers asking, “How much does your high-temperature rotary joint cost

In this situation, we cannot immediately provide you with a quotation. When equipment manufacturers choose high-temperature rotary joints, they need to judge based on their usage. SD generally needs to confirm the working conditions such as medium fluid, pressure, temperature, and speed to select the suitable joint model for purchase. A rotary joint is composed of multiple sealing components, and the temperature range it can withstand is determined by them. We need to confirm which high-temperature medium is used, and the commonly used high-temperature conditions are the following three.
1. The medium is hot water
The general temperature is between 50 ℃ and 180 ℃. In this case, we can use the SD H-type high-temperature water joint. This type of high-temperature water joint adopts a high-temperature resistant seal, with stainless steel and imported graphite as the sealing body, and their main medium is water. However, the temperature resistance of stainless steel and graphite is not afraid of hot water invasion at 100 ℃.

2. The medium is steam
The general temperature is between 200 ℃ and 355 ℃. We recommend using SD Q-type high-temperature steam rotary joint. The overall structure of this model has changed, and the flat section seal has been changed to a spherical seal. The double rod external support structure of the antimony impregnated sealing ring can withstand high pressure and high speed.

3. The medium is thermal oil
The temperature of the general heat transfer oil medium is between 220-350 ℃. If ordinary sealing components are applied to heat transfer oil, they are likely to “burn” out after about a week of use. We recommend using SD BQ high-temperature hot oil rotary joint, external cooling system, higher temperature resistance, high-temperature bearing with circulating oil lubrication, and outer pipe insulation design to reduce bearing temperature. It has good universality, easy interchangeability, long life, and high reliability. So when we need to use high-temperature rotary joints to find models, we must choose ones that match the working conditions.
SD Technology has been rooted in the rotary joint industry for 23 years, and our products are exported to more than 30 countries and regions at home and abroad. We have always focused on pursuing quality and thoughtful service. We have compiled over 1000 experiences and tips for selecting and using rotary joints. SD will share more knowledge on the use of rotary joints with you in the future. We also look forward to communicating with you if you encounter any problems during the use of rotary joints.