Watts 405NRS FLGXGRV 4 Gate Valve, Ductile Iron, Flanged

The Watts 405NRS FLGXGRV 4 is a 4" gate valve with a non-rising stem (NRS), a resilient wedge and Flanged connections. It features a ductile iron body and a rubber seat. Rated to 200 psi and up to 140°F.

This 4" non-rising stem resilient wedge gate valve with flanged inlet and a grooved outlet connection is used in commercial applications and is recommended to be used for potable water, water distribution services and feed lines and sewage disposal facilities services. It features an epoxy coated, ductile iron body, stainless steel non-rising stem, and is operated by a cast iron handwheel. The maximum pressure is 200 psi (13.8 bar) CWP.

Features

• Ductile iron body
• Non-rising stem
• Flange x groove connections
• Easy in-line service

Common Questions

Is this UL/FM listed for fire service?

No. Series 405 is not UL/FM listed — it is built for water distribution and irrigation service at 200 psi CWP. For a fire main shutoff, use the UL/FM listed 408-OSY-RW instead.

Rising or non-rising stem?

Non-rising stem (NRS). The stem turns but does not travel, so the valve fits tight spaces, buried service and pits. There is no visual open/closed indication — use an OS&Y valve where that is required.

Is this a complete valve or just the replacement gate?

Complete valve. The 405NRS FLGXGRV 4 ships as a full assembly — body, bonnet, wedge, stem and handwheel. The Watts NRS-RW-GATE / OSY-RW-GATE items are gate assemblies only, sold to service an existing valve.

What does "resilient wedge" mean?

The wedge is a ductile-iron disc fully encapsulated in rubber, so it seals bubble-tight against the epoxy-coated body without a bronze seat ring and holds up against high differential pressure.

Specifications

• Type: Gate
• Size: 4"
• Inlet Size: 4"
• Outlet Size: 4"
• Connection: Flanged
• Body Material: Ductile Iron
• Seat / Seal Material: Rubber
• Max Pressure (psi): 200
• Application: Domestic Water
• Shutoff: NRS Gate
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: 405NRS FLGXGRV 4
• Temperature: up to 140°F
• Lead-Free: No
• Valve Style: Gate
• Stem Type: Non-Rising (NRS)
• Wedge / Disc Type: Resilient
• UL/FM Listed: No
• Pressure Rating: 200 psi CWP
• Operator / Handle: Handwheel
• Bonnet Style: Bolted
• Replacement Part: No
• Standards: MSS SP-70;ANSI B16.1