PureFlex - Model 400 Series -Ball Valve

Wrench

Locking wrench manufactured from Durcor-62™ vinyl ester is virtually unbreak- able. Lifetime warranty against failure of any kind.

Wrench Stop
Independent locking wrench stop is bolted to valve body and not connected to packing gland in any way. Prevents unnecessary gland movement and stem side loading.

Valve Body
One piece massive valve body is light weight, rugged and is as corrosion resistant on the outside as it is on the inside to resist environmental attack. Valve body end cap is sealed with PTFE diametrical seal locked in compression to eliminate cold flow. The valve body meets ANSI B16.10 and flange connections are compliant to ASME B16.5 Class 150. ISO 5211 and flange actuator mounting pads are standard

Packing Gland adjustment
Stud and nut design, standard material is Hastelloy® C276. Designed to minimize valve body stress when adjustment is required. Live loaded
Packing gland is live loaded with Belleville washers, eliminating unnecessary adjustment and aids in reducing stem emissions. Packing Gland Packing gland standard materials is .Hastelloy® C276 and is guaranteed not to corrode in hostile enviroments.

Valve Stem - Blow-Out Proof
Stern insert is Hastelloy® C276 encapsulated
with either carbon graphite reinforced vinyl
ester or Z-CORE® epoxy resin.
Stem Bearing
Graphite / PTFE Radial bearing prevents _stem side loading aiding in eliminating
emissions and extending packing life.
Stem Sealing
Chevron PTFE packing provides positive stem pealing while mainaining low turning torque.
Thrust Bearing
Graphite / PTFE stem thrust bearing ^riaintains low turning torque.

Valve Ball
Ball material is carbon graphite reinforced /vinyl ester or Z-CORE® epoxy. Ball O.D. is
micro polished to provide longer seat life.
Seat Energizer
FEP encapsulated Viton® O-rings energize
seats to ball and aid in bubble tight shut-off at —low pressures.
Seat
PTFE cavity filled seats minimize cavity around ball which could retain process media. jwOther seat materials available.