(4300) Flate-O-Seal

Description
Product Specs
Seat Options

Description

Our 4300 series features a bubble tight shut-off with combined scissors/inflatable seat, double disc for redundant bubble tight shut-off in the event of seal damage, airfoil reinforced disc (optional), an easy replacement of seal on sizes Ø36″ and larger without removing valve from the line, positive seal inflation when disc in closed position, and deflation before disc opening and bubble T.S.O. service. Various actuation are available including pneumatic, electric, hydraulic and manual. Lower actuator torque due to zero interference on opening and closing. Each valve is engineered to suit system requirements in configuration, size and face-to-face dimension. The 4300 series can be used with nuclear safety and non-safety related applications for bubble tight shut-off.

Flanges, Body, Disc: Standard – Carbon Steel, Optional – A-588, Stainless Steel, Exotic Materials & Any Weldable Alloy Available on Request
Shaft: Standard – Stainless Steel, Optional – Various Stainless Steel & Exotic Materials
Bushings: Standard – Carbon Graphite, Optional – Bronze, Teflon & Nitronic 60
Bearings (Outboard ball): Standard – Power End, Optional – Ball & roller – all sizes
Packing Follower: Standard – Stainless Steel, Optional – Same alloys as body
Lantern Gland: Standard – Stainless Steel, Optional – Same alloys as body
Seat: Standard – E.P.D.M & Neoprene, Optional – Viton
Maximum Operating Temperature: Standard 300°F, Optional 400°F
Maximum Static Pressure: Standard 25 PSIG, Optional 30 PSIG
Maximum Shut-Off Pressure Drop: Standard 1 PSI, Optional 50 PSI
No-wear seat design
No seating torque required