Model 90 Fabricated Simplex Strainers - 2" to 48"
Overview
Simplex pipeline strainers remove damage causing particulate matter from the process media, protecting system components such as flow meters, pumps, and spray nozzles. The particulate matter is captured in the strainer basket. The line is then temporarily shut down and the basket removed for cleaning or replacement.
The Model 90 Simplex Strainer is perfect for applications with unique requirements or standard ones where a cast strainer would not fit or be too heavy. If a standard simplex strainer won't work in your application Eaton can help you design a Model 90 Simplex Strainer to your exact specifications....no compromises.
Two Cover Types
The Model 90 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. For medium size strainers, 8" to 16", a bolted slide hinge cover can be specified. This allows a single operator to open and close the cover. Eaton can also design and manufacture special covers to meet the requirements of any application.
Unique Strainer Baskets
Eaton has designed a special, unique strainer basket for the Model 90 Fabricated Strainer. The basket has a slant top design which improves the flow through the strainer and results in significantly lower pressure drops than would otherwise be the case. The slant top design results in a more compact basket which weighs less than an ordinary basket and makes it possible for a single person to remove it from the strainer housing. This is a real labor saving feature when it becomes time to clean or change out the basket. Strainer baskets are made of stainless steel, although almost any type of material can be specified. Basket perforations from 1/32" up to 1" are available and mesh linings in sizes from 20 to 400 mesh for fine straining applications can be specified.
Many Available Options
Some common, easy to fabricate modifications are rotated nozzles, off-set nozzles and horizontal-vertical flow. Rotated inlet and outlet nozzles such as a right angle design can eliminate the requirement for an elbow in the down stream piping. Off-set nozzles, lowering or raising either the inlet or outlet nozzle can often eliminate serious alignment and support problems. The horizontal-vertical design with the flow exiting the strainer at a 90 degree angle can simplify the installation of a strainer in an already existing piping system.
Fabricated simplex strainers can be designed with a backflush/backwash option. In these designs a piping connection with an on/off backflush valve is fabricated at the strainer bottom and has a connection to the bottom of the strainer basket. When solids accumulate in the bottom of the basket, the backflush valve is opened and the differential pressure between the operating pressure and the back flush system removes the solids without shutting the system down. Backflushing is often supplemented by a backwashing operation. Backwashing is done by having fluid flow, under pressure, in the reverse direction into an empty strainer. This flow reversal backwashes the basket and removes the residual dirt. Backwashing is often regarded as a second step, used to remove dirt not removed by back flushing.
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 90 Strainers to ASME Section VIII and ANSI B31.1, .3, .4, .7, and .8. Eaton welders are qualified to ASME Section IX.
For more information, contact us by phone 1-888-924-6233 or by E-mail.
