YStrainer Installation and Maintenance Guidelines

This page is providing you some important guidelines for installing and maintaining the Y-Strainers. These tips shall help you in achieving the quality work and right first time.

If you want to read a full method statement for strainer installation you can search our website.

First we shall see some useful installation tips and this will follow the o-ring replacement tips.

Y-Strainer Installation Tips

1. Flow Orientation: Cartridge/Cap projection will point downstream.

2. Axial Alignment: To avoid damage to the housing – ensure that the inlet and outlet piping center-lines are in alignment. For flanged units, ensure connecting flanges are parallel with the strainer’s sealing surfaces.

3. Connection Spacing: Observe end-connection spacing, given in tables below. For flanged units, do not rely on bolts to draw connecting pipes to strainer. Err on the side of less, rather than more spacing to minimize stresses on the housing welds. Allowance for NPT thread, or Socket Weld insertion will further reduce the spacing.

4. Flanged Connection Gaps or Misalignment: If the gap between rigidly mounted inlet and outlet piping flanges is too large to accommodate the strainer (e.g., gap of 1/16” or more), or if the inlet and outlet piping flanges are not carefully aligned (e.g. angular deviation of 2° or more), there are many spacers to fill the gap, fix the alignment, or both.

For information on purchasing such spacers, provide the center-line distance plus the angular gap to be filled to your distributor who will provide you with a quotation. If the gap is less than 1/16” or the misalignment is less than 2°, 1/16” gaskets at each end are satisfactory to fill the gap/ misalignment.

NOTE: We strongly recommend use of Formula-8 Teflon PTFE paste sealant, on PTFE-to- PTFE NPT threaded joints.

Operating Pressures

Maximum operating pressure varies with temperature, Ystrainer size and material.

As a general rule, maximum long term operating pressures at room temperature are shown in the table below.

Short-term operating pressures can be substantially higher with PTFE units since creep would not be a factor.

For guidance in higher temperature environments, contact the Y strainer factory.

End Connection Spacing and Maximum Long-Term Operating Pressures at Room Temperature

YStrainer O-ring Replacement

O-rings are user-replaceable; Spares can be purchased from the factory. Dash numbers are given in the table below.

Removal and installation of o-rings is mostly easily accomplished when the o-rings are pre-heated in hot water.

Always use a plastic tool to avoid damaging the sealing surfaces of the o-rings and their seats.

O-ring AS 568 Dash Numbers

For more details you can visit the official website of Micromold products.