Watts 87SI-T 1 1/4 Strainer, Stainless, NPT

The Watts 87SI-T 1 1/4 is a 1-1/4" wye-pattern strainer with NPT connections that removes pipeline debris and particulates to protect downstream equipment. It features a stainless body and a ptfe seat. Rated to 720 psi.

This 1 1/4" stainless steel wye pattern strainer, model 87SI-T, has a stainless steel body and stainless steel screen, a stainless steel retainer cap with PTFE gasket and blow-down plug. The strainer has a machined seat that allows the screen to be self-aligning to assure a perfect fit. It has thread connections.

Features

• Wye pattern
• Stainless steel body
• Threaded connections
• Stainless steel screen
• Includes: Strainer

Common Questions

Can I get a finer or coarser screen?

Yes. Watts builds this body with a range of screens and encodes the choice in the model number, so a finer or coarser screen is a different part number rather than an accessory. This one is the standard screen. Finer screens catch smaller particles but clog faster and cost more pressure drop, so size the screen to the debris you actually have.

Does it have a blowoff / blowdown port?

Yes. The retainer cap/cover is tapped for a blowoff connection, so you can flush accumulated debris by pulling the plug or piping a blowdown valve to it -- no need to break the strainer apart. The closure plug is included.

What is the "seat material" on a strainer?

A strainer has no seat -- nothing closes against anything. The PTFE called out here is the retainer-cap seal (the gasket between the cap and the body), which is what limits the temperature and chemical compatibility of the closure.

Specifications

• Type: Strainer
• Size: 1-1/4"
• Connection: NPT
• Body Material: Stainless
• Cap Seal / Gasket Material: PTFE
• Max Pressure (WOG, psi): 720
• Pack Quantity: 6
• Country of Origin: Taiwan
• Warranty: 1 Year Limited
• MPN: 87SI-T 1 1/4
• Lead-Free: No
• Strainer Pattern: Wye
• Blowoff / Drain Tapping: Yes
• Blowoff Plug Included: Yes
• Body Coating: None
• Alternate Screens Available: Yes