How to Replace Gated Wye Handles

Summary: Replacing or upgrading Gated Wye handles is a straightforward service job that can improve valve operation depending on your department’s preference. Some firefighters prefer the added leverage and control of long folding handles, while others stick with short handles for their compact profile and reduced snag risk. This guide walks through how to remove short handles and install long folding handles using basic tools, along with key installation details like handle orientation, O-ring placement, and pivot pin installation.

Long handles vs. short handles: which should you use?

There’s no single “right” answer when it comes to handle style. It comes down to how your department operates and what feels best in your hands on the fireground.

Some firefighters prefer the extra leverage and easier operation that long folding handles provide, especially when the valve is stiff or operating under pressure. Others prefer the low-profile, compact design of short handles, which reduces the chance of snagging or accidental movement.

Both options are solid. It’s about choosing what fits your crew and your setup.

Short handles

  • Compact and low profile
  • Less likely to be bumped or snagged
  • Simpler design with bolted attachment

Long folding handles

  • Provide increased leverage
  • Easier to operate under pressure
  • Fold alongside the hose to reduce interference

Where to get replacement parts

The handle components used in this conversion are sold individually rather than as a complete kit. Departments can purchase the parts directly from TFT or through a local TFT dealer.

If you need help identifying the correct handle components or O-rings for your valve, you can contact the TFT Technical Service team at [email protected] or call (800) 348-2686.

Valves this handle upgrade applies to

The handle conversion process applies to several TFT Gated Wye configurations, including:

  • AYG
  • AYNJ
  • AYSNJ

Some valves may have two handles, while others may have a handle on one side and a gauge on the other. Regardless of configuration, the handle installation process is essentially the same.

Tools required

This service job requires minimal tools.

For removing short handles:

  • 1/4" Allen wrench

For installing long folding handles, a press makes the job easier, but a hammer and proper support will also work.

Step 1: Remove the short handles

Short handles are attached to the trunnion using two Allen bolts.

Use a 1/4" Allen wrench to remove these bolts and pull the handle off the trunnion. Once removed, the trunnion is exposed.

The trunnion includes a detent ball and spring that create the “click” feel during operation. This assembly typically does not need to be removed unless damaged.

Step 2: Identify the correct handle orientation

Before installing new handles, confirm orientation.

  • Red handle on the right side
  • Blue handle on the left side

This is based on viewing the valve from the 2.5" inlet looking toward the outlets.

The red handle also includes the serial number for identification.

Step 3: Install the trunnion O-rings

Each trunnion has two O-ring locations.

  • Install both O-rings
  • Ensure they are seated properly
  • Confirm they are not twisted or damaged

These O-rings are critical for sealing and smooth operation.

Step 4: Align the handle and trunnion

Slide the handle onto the trunnion and align the holes.

A simple trick is to insert an Allen wrench or small rod through the hole to hold alignment while starting the pivot pin.

Step 5: Install the pivot pin (long handles)

Long folding handles use a pressed pivot pin instead of bolts.

  • Drive or press the pin through the handle and trunnion
  • Ensure proper alignment before starting

A press is ideal, but a hammer works with proper support. Using a workbench or wood block can help control depth and alignment.

Step 6: Repeat for the second handle

Repeat the same process on the opposite side:

  • Install O-rings
  • Align handle
  • Install pivot pin

Take care not to strike or damage outlet threads during installation.

Step 7: Verify operation

Cycle the valve several times.

  • Ensure smooth movement
  • Check detent engagement
  • Confirm handles clear fittings and hose lines

If everything operates cleanly, the valve is ready for service.

Replacement parts reference

Long handle components

  • AY340 — Folding handle (no serial number)
  • AY340R — Folding handle (with serial number)
  • AY342-BLUE — Folding handle label, blue
  • AY342-RED — Folding handle label, red
  • AY345 — Folding handle pivot pin (2 required)

Short handle components

  • AY232 — Short handle with serial number
  • AY231 — Short handle with no serial number
  • AY020-R — Short handle label, red
  • AY020-B — Short handle label, blue
  • VT31-18SH1.2 — Short handle screws (2 required)

Common components

  • VO-011 — O-ring (2 per handle)

Note: These parts are available individually rather than packaged as a kit.