Watts ICV-125-2-2-T 4 Check Valve, Cast Iron, Wafer

The Watts ICV-125-2-2-T 4 is a 4" dual-disc wafer check valve with Wafer connections. It permits flow in one direction and closes against reverse flow. It features a cast iron body and a buna-n seat. Rated to 200 psi and 40°F to 250°F.

This Cast Iron Wafer Check Valve, Watts 4" Model ICV-125-2-2-T, is used in commercial and industrial HVAC applications to prevent water hammer and reverse fluid flow in water lines. It features a cast iron body with aluminum-bronze disc plate, Buna-N seat, PTFE bearings, stainless steel hinge and stop pins, steel plug and eye bolt, and stainless steel springs. The maximum pressure is 200 psi.

Features

• Cast iron body
• Aluminum bronze disc plate
• Buna-N seat
• PTFE bearings

Common Questions

Can I install it vertically?

Yes. The ICV-125-2-2-T 4 is rated for horizontal or vertical lines because the spring, not gravity, closes the disc. In a vertical run the flow must be upward through the valve, following the body arrow.

Will it slam or cause water hammer?

No. The spring closes the disc before the flow actually reverses, so the valve seats silently instead of being slammed shut by the returning column of water. That is the point of a silent (non-slam) check.

Does it come with a strainer?

No. This is an inline check valve only. If the line carries debris, install a strainer upstream — grit on the seat is the usual cause of a check valve weeping by.

Is it potable rated?

No. This model is not certified lead-free, so it is not for potable-water piping — it is specified for hvac service. Watts LF-prefixed check valves cover potable applications.

Specifications

• Type: Check
• Size: 4"
• Connection: Wafer
• Body Material: Cast Iron
• Seat / Seal Material: Buna-N
• Max Pressure (psi): 200
• Application: HVAC
• Country of Origin: China
• Warranty: 1 Year Limited
• MPN: ICV-125-2-2-T 4
• Temperature: 40°F to 250°F
• Certifications: API-594
• Lead-Free: No
• Check Mechanism: Dual-Disc Wafer
• Installation Orientation: Horizontal or Vertical
• Silent / Non-Slam: Yes
• Disc / Flapper Material: Aluminum Bronze
• Spring Material: Stainless Steel
• Integral Strainer Included: No