The opening and closing part of the Non rising Stem resilient seat sealing gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The valve is a replacement product of the traditional gate valve. It uses the elastic gate to compensate for slight deformation and achieves a good sealing effect. It can be widely used in tap water, sewage, construction, food, electricity, medicine, metallurgy, textile, energy systems, etc. Used as a shut-off device on fluid lines.
Main Standards
Design and Manufacturing Standards：CJ/T216-2013, EN1171, BS5153
Connection flange standard: GB/T9113-2010, EN1092, BSEN1092
Structure length standard: GB/T12221-2005, EN558, BS EN558-1
Pressure test standard: GB/T13927-2008, EN12266, BSEN12266-1
Performance characteristics
1) Integral rubber-coated gate: The ductile iron skeleton is covered with high-performance rubber and the latest vulcanization technology inside and outside.
2) One-piece copper nut: The copper nut of the valve stem and the ductile iron bracket are tightly connected as a whole by a special process to ensure that they will not be loosened under long-term operation and avoid the control failure of the valve.
3) Flat and low seat, the bottom of the elastic seat seal gate valve adopts a full flow channel straight-through design, which is equivalent to a straight pipeline, and is not easy to accumulate debris, ensuring reliable sealing and unobstructed fluid flow.
4) Lightweight structure: The compact structure reduces the maximum working height by more than 60mm to 300mm compared with the traditional gate valve, saving engineering space; the body is made of ductile iron material, and the weight is reduced by about 20% to 30% compared with the traditional gate valve, and the installation and maintenance are convenient.
5) Corrosion resistance: The inner and outer surfaces of the valve are painted with epoxy resin powder, and the inner parts are made of stainless steel and copper alloy to prevent rust and fluid corrosion.
6) Four seals are used to completely eliminate the leakage of the valve: the first seal, the upper seal of the valve stem and the valve cover, is sealed with high-quality O-rings; the second seal, the special seal is used between the valve cover and the valve body between the third valve stem and the stuffing box, use high-quality O-rings; the fourth valve stem and packing gland bracket use high-quality O-rings.
7) The valve stem is made of high-quality stainless steel, and the hardness of the valve stem reaches HB200-275 after quenching and tempering treatment, which not only ensures the strength of the valve stem, but also increases the wear resistance of the valve stem.
8) The valve seals in both directions and can be installed anywhere in the pipeline.
9) The manual actuator is a hand wheel, which can be replaced with gear, electric and other actuators.
Main parts material
| Description | Material |
| Body | Ductile Iron |
| Disc | Ductile Iron+EPDM/NBR |
| Stem | SS410 |
| Seat | EPDM/NBR |
Stem nut | Brass |
Main technical parameters
Nominal pressure (Mpa) | Shelltest pressure(MPa) | Seal test pressureMPa | Operating temperature(℃) | Applicable media |
1.0 | 1.5 | 1.1 | ≤80℃ | water, oil, etc. |
1.6 | 2.4 | 1.76 | ||
2.5 | 3.75 | 2.75 |
Structure diagram
