Resilient Seated Gate Valve With Socket / Spigot End For PE / PVC / DI Pipe
Design features:
Spindle’s gaskets O-ring - “DRY THREAD” - replaceable under pressure.
Stainless steel spindle with rolled thread and bearing.
Total sufrace rubbered wedge with replaceable spindle nut.
Gate valve with full bore.
All parts are protected against corrosion.
Resilient seated gate valve to EN 1074-1 and 2 / EN 1171, with WRAS approved EPDM
rubber parts.
Body and bonnet of GJS-500-7 (GGG-50). Wedge of ductile iron with fixed wedge nut,
fully vulcanized with EPDM rubber. Stem of stainless steel min. 13% Cr with rolled thread
and wedge stop ring.
Stem sealing with 4 O-rings in a nylon bearing, an EPDM rubber manchette, and a NBR
wiper ring. EPDM bonnet gasket in a groove, countersunk bonnet bolts encircled by the
bonnet gasket and sealed with hot melt. Sockets fitted with "Euro" sealing rings of EPDM
rubber.
Epoxy coating to DIN 30677-2 and GSK guidelines - internally and externally.
A. Stem sealing
Three independent stem seals offering triple safety:
• A NBR wiper ring protects against dirt from outside.
• A polyamid bearing with 4 NBR O-rings protects against galvanic corrosion.
• An EPDM rubber manchette sealing acts as the main hydraulic seal to the flow.
B. Body/bonnet connection
The unique assembly of the valve body and bonnet ensures a durable tightness:
• A round rubber bonnet gasket fits into a recess in the valve bonnet preventing it
from being blown out by pressure surges.
• The stainless steel bonnet bolts are countersunk in the valve bonnet, encircled
by the bonnet gasket and sealed with hot melt. Thus there is no risk of corrosion
as the bolts are not exposed to the medium or soil.