Watts ACV114 1-1/4" Check Valve, Glass-Reinforced Nylon, FNPT

The Watts ACV114 is a 1-1/4" silent spring check valve with FNPT connections. It permits flow in one direction and closes against reverse flow. It features a glass-reinforced nylon body and a buna-n seat.

This 1 1/4 inch female check valve is a spring-loaded non-return valve which can be installed inline or at any angle. This check valve allows the fluid to flow in one direction only and is ideal for pumping, marine, irrigation, domestic, agricultural, and industrial applications. This valve consists of a fiberglass reinforced nylon body, female NPT threads, 316 stainless steel spring, acetyl plunger, and nitrile rubber seal and O-ring. This valve is strong, lightweight, and can be taken apart for servicing.

Features

• Ideal for agricultural, irrigation, rural and municipal, and plumbing applications
• Efficiently prevents the loss of water
• Spring-loaded, plunger style, non-return valve for unrestricted flow
• Provides easy connection with NPT threads and installs at any angle
• High grade fiberglass reinforced nylon construction offers corrosion resistance and long-lasting, reusable wear

Common Questions

Can I install it vertically?

Yes. The ACV114 is spring-loaded, so it seats at any angle — vertical, horizontal, or on an incline. Only the flow-direction arrow has to be right.

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 domestic water service. Watts LF-prefixed check valves cover potable applications.

Specifications

• Type: Check
• Size: 1-1/4"
• Connection: FNPT
• Body Material: Glass-Reinforced Nylon
• Seat / Seal Material: Buna-N
• Application: Domestic Water
• Pack Quantity: 50
• Country of Origin: NZ
• Warranty: 1 Year Limited
• MPN: ACV114
• Lead-Free: No
• Check Mechanism: Spring (Silent)
• Installation Orientation: Any
• Silent / Non-Slam: Yes
• Disc / Flapper Material: Acetal
• Spring Material: 316 Stainless Steel
• Integral Strainer Included: No