Watts G4000-M1 3 Ball Valve, Cast Iron, Flanged

The Watts G4000-M1 3 is a 3" 2-piece full port ball valve with Flanged connections. It features a cast iron body and a ptfe seat. Rated to 200 psi and up to 353°F.

This 2-Piece Full Port Cast Iron Flanged Ball Valve, 3" Watts Model G4000M1, is used in commercial HVAC and steam applications. It features a 125 psi steam rating, stainless steel ball and stem, PTFE seat and packing, a steel-plated stop plate, and a ductile iron handle. It has a quarter turn operation, positive shutoff, and is ideal in replacing old cast iron gate valves.

Features

• Cast iron
• Flanged
• Full port
• Stainless steel ball and stem

Common Questions

Is this full port or standard port?

Full port. The ball bore matches the 3" pipe ID, so the valve adds almost no restriction — the right choice for pump suction, main shutoffs, and any run where you cannot give up head.

Can I use this on natural gas or propane?

No. This valve carries no fuel-gas listing, and code requires an ANSI Z21.15 / CSA listed valve for natural gas or LP. Use a Watts GBV series gas ball valve instead.

What's the steam rating?

125 psi WSP (saturated steam). Do not size steam service off the 200 psi figure — that is the WOG/CWP rating (cold water, oil, gas, non-shock).

Can it be serviced without cutting it out?

No. A 2-piece body is not designed for in-line rebuild; it is replaced as a unit. Choose a three-piece valve (LFB6800 / S-6800 series) where in-line serviceability matters.

Specifications

• Type: Ball
• Size: 3"
• Inlet Size: 3"
• Outlet Size: 3"
• Connection: Flanged
• Body Material: Cast Iron
• Seat / Seal Material: PTFE
• Max Pressure (psi): 200
• Application: Steam
• Port Style: Full
• Ways: 2-Way
• Country of Origin: China
• Warranty: 1 Year Limited
• MPN: G4000-M1 3
• Temperature: up to 353°F
• Lead-Free: No
• Valve Construction: 2-Piece
• Ball Material: Stainless Steel
• Stem Material: Stainless Steel
• Handle Type: Lever
• Actuation: Manual
• Max Steam Pressure (WSP): 125
• Fuel Gas Rated: No
• Integral Drain / Waste Port: No