The Flomatic 79391MDW8SLPLG 4-1/2" 80MDW-VFD DEEP WELL® Casing Threads Check Valve is uniquely designed to prevent backflow, minimize hydraulic shocks and provide low friction losses. Designed to handle pressures to 4400 psi and temperatures up to 200°F.

80MDW-VFD DEEP WELL^® Male short casing x female long casing threads- High strength epoxy coated carbon steel body, male inlet x female outlet. Metal to metal seat with stainless steel spring and stem with casing round threads. Standard with break-off plug.

Body Pressure Max: 4,400 PSI (API J55 Tubing)

2-3/8" thru 3-1/2" use a 3/8" break-off plug.
4-1/2" thru 9-5/8" use a 3/4" break-off plug.

Specifications:

NSF/ANSI 61 Approved

Max Pressure:  4400 psi

Body:  Carbon Steel

Threads:  4-1/2" Casing

Weight:  40 lbs

Flomatic's Model 80MDW-VFD is a high performance, low friction loss, Deep Well Check Valve designed for well water use to support the weight of up to 3,300 feet of pipe and the well pump. The small OD valve body is constructed from very strong Carbon Steel, similar in strength to API J55 tubing. Featuring a male inlet x female outlet body with 8 round EU (External-Upset) Tubing threads 2 3/8" thru 4 ½ ", or 8 round make short casing threads x female long casing threads 4 ½ " thru 9 5/8". Additionally, the spring loaded metal to metal valve seat, is uniquely designed to provide low friction losses, prevent backflow, and minimize hydraulic shocks in the system. Model 80MDW-VFD provides years of trouble-free operation.

Lower Friction Loss:

Due to its uniquely designed spring loaded metal to metal valve seat, Model 80MDW-VFD provides lower friction losses, preventing backflow and minimizing hydraulic shocks in the system.

Compact Design:

Small Valve Body dimension to fit in smaller diameter well casings along with 8 Round or 8 Round short threads.

• Fusion Bonded Epoxy Coated NSF 61 Approved, Inside and Out
  
• Supports Up to 3,300 feet of Pipe and Pump Weight
  
• Standard 3/4" Break-Off Plug
  
• Hydro tested at 4,400 PSI with a 1-Year Warranty
  
• Different sizes available in an all 316 assembly (Consult Factory)