Resilient Seated Gate Valve, F4

Non-maintance design, inside and outside electrostatic epoxy resin powder coating, the valve can be installed under the ground directly.
The valve adopts the back seal and the stem seal, those double seals can avoid any top leakage when installation.

The customer can easily replace the top seal "O" rings under the pressure.
The valve adopts flat bottom designing ensures no dead space and very little flow resistance.
The wedge adopts bidirectional groove design ensures the best reliable seal.
A set of seal pressure angle adopts gradual design.

The pressured surface of setm adopts high strength self-lubricated materials, the valve can be opened and closed easily.
The bonnet, body castings adopts equal thickness design to avoid the outside leakage by the stess function.

STANDARDS APLLIED
DESIGN STANDARD FACE TO FACE DIMENSIONS TESTING STANDARD
DIN3352-4A DIN3202, F4 DIN3230
DIN3352-4B DIN3202, F5 DIN3230
BS5163 BS5163 BS5163

SUITABLE AREA
Potable Water, Waste Water, etc.
SCOPE
Nominal diameter
DN(mm)
Nominal pressure
(MPa)
Water power testing(MPa) Working temperature≤ 800C
Maximum working pressure(MPa)
Strength testing Seal testing
40~600 1.0 1.5 1.1 1.0
40~600 1.6 2.4 1.76 2.0
40~300 2.5 3.75 2.75 2.5

PART LIST
NO. PARTS MATERIAL
1 Body GGG
2 Wedge GGG bonded with NBR or EPDM
3 Stem 2Cr13
4 Stem nut ZCuA110Fe3
5 Middle gasket NBR or EPDM
6 Bonnet GGG
7 Bolt Q235-A
8 Lubricant gasket PTFE
9 O-ring NBR or EPDM
10 O-ring NBR or EPDM
11 Seal bush POM
12 Seal cover 2Cr13 or 304
13 Dustproof cover NBR or EPDM
14 Top cover Pa-66
15 Hand wheel Sg-12
16 Screw Cr13.