Model 91 Tee Type Strainer - 2" to 48"
Overview
The Model 91 Tee Strainer offers several advantages over other strainer designs. The strainer is very compact, important in applications where space is restricted. Unlike most other strainers the Model 91 can be used in both vertical or horizontal installations and the strainer screen can be cleaned without draining the strainer housing.
These strainers also feature a convoluted strainer screen and an unrestricted flow path that results in a very low pressure drop compared to other strainer types. This makes the strainers ideal for applications such as condensate and boiler feed pump suction where the process water has low solids loading and the pressure drop is critical.
Two Cover Types
The Model 91 features a choice of two cover types. The simplest type is the bolted cover which is cost effective and works well in applications where basket changing is infrequent. A davit assembly can also be specified for larger strainers that have heavy covers. This makes it possible for a single person to remove and replace the cover of the strainer.
If the strainer will be opened frequently for basket cleaning, a bolted cover can be less effective because of the time needed to remove and then re-install the cover bolts. Fore these applications Eaton offers a special, hinged quick opening cover that is secured by swing bolts. This type of quick opening cover can even be adapted for higher pressure applications if required. Eaton can also design and manufacture special covers to meet the requirements of any application.
Special Strainer Screens
Strainer screens for the Model 91 are made of stainless steel, although almost any type of material can be specified. Screen perforations from 1/6" up to 1/2" are available and mesh linings in sizes from 20 to 60 mesh for fine straining applications can be specified. The unique, convoluted design of the strainer screen doubles the screen area and completely changes the dire accumulation pattern on the screen. This makes more effective use of the screens straining area and increased the time between screen cleanings. In larger sizes, because of greater screen area, the Model 91 can be an economical and functionally better choice than the traditional Y Strainer.
Easy to Customize for Special Application Requirements
The Model 91 Tee Strainer is easy to customize to meet the needs of special, unique applications. The strainer can be designed to very tight dimensional restrictions for applications where space is a problem. It can also be adapted for straight through or right angle flow, making it ideal for retrofit situation in which strainers were initially omitted.
Steam jacketing is another available option. This is used to maintain critical fluid temperatures through the strainer. High temperatures are often required to process and transport highly viscous fluids. This modification is designed so that there is no impact on the function or normal maintenance of the strainer. Steam jacketing is available in carbon steel and Type 316 stainless steel for service up to 450°F.
Eaton can design and fabricate Model 91 Tee Strainers to ASME Section VIII and ANSI B31.1. Eaton welders are qualified to ASME Section IX.
For more information, contact us by phone 1-888-924-6233 or by E-mail.
