Imported pilot operated quick shut-off valve
American YLOK imported pilot-operated quick shut-off valve adopts sleeve-oriented, pressure-unbalanced spool, which is suitable for cut-off occasions with large pressure difference. The surface of the valve core and valve seat is welded with hard alloy to ensure the long-term stable operation of the valve. For the shut-off of high medium temperature and large pressure difference, we specially designed a double-spool pressure relief shut-off valve for this purpose. This type of valve trim adopts double spool structure and flow-off design. When the valve is opened, the small spool is opened first. The small spool has a small force area and therefore has a small opening force. After the small spool is opened, the pressure behind the valve is released, and the pressure difference acting on the large spool is It is greatly reduced, and the large spool can be opened as long as the force of the actuator is small. The valve trim of this structure can well meet the cut-off of high pressure difference occasions.
Technical parameters of imported pilot-operated quick shut-off valve:
Trim features: sleeve guide, unbalanced trim, quick release cage structure, dual valve core pilot structure
Valve body type: straight type, angle type
Bonnet form: standard type, heat dissipation type
Flow characteristics: quick opening
Caliber range: DN100-400 (4”-16”)
Pressure rating: PN1.6, 4.0, 6.3Mpa (ANSI 150, 300, 600LB)
Leakage class: ASME B16, 104 Ⅴ (standard metal seat)
Pipe connection method: flange type, butt welding type
Applicable temperature range: -196℃～550℃
Actuator type: pneumatic diaphragm actuator, pneumatic piston actuator, electric actuator

Professional manufacturing and professional services, KUNAG creates more value for you
Continuously improving the quality of services and keeping improving, "sincere service" is the eternal theme of KUNAG. Kunag strictly complies with the requirements of ISO9001-2000 quality system certification, strictly controls the quality and responsibilities to the people to ensure the healthy operation of production, sales and service. To strengthen communication with customers and to provide our customers with quality products and perfect service, we hereby make the following commitments:
Product Standards
Products are designed, manufactured, and inspected strictly in accordance with China\'s GB, HG standards, and US API standards. The hardness of the sealing surface meets the national requirements and the width exceeds the national standard.
pre-sale service
Product introduction, technical communication, non-standard product design, troubleshooting.
Sale service
Trustworthy contracts, guarantee timely delivery, and keep in touch with customers at any time.
For special or complex products, our factory arranges technicians to train and guide users on product use, troubleshooting, tuning and maintenance.
After sales service
The warranty period of Weitong products is 12 months from the factory, and the "three guarantees" service (return, replacement, repair) is implemented.
During the use of our products, our factory regularly organizes technical and inspection personnel to visit and solicit user feedback on product quality, use conditions, and improvement opinions in order to further improve product quality.
Quickly respond to customer complaints about product quality problems, and after-sales service personnel rushed to the scene within 24-36 hours (48 hours outside the province).
For after-sales service, users are required to fill in the quality feedback form after the service and make appraisal opinions, while improving Guardian\'s service quality.

Order process
Landline: 021-59718851 (AM-8: 30 to PM-17: 30)
Mobile phone: 18918462396 (WeChat same number 24-hour service)

QQ: 2030185432

Email: kunage@126.com
Receive customer purchase list, provide customers with valve model selection and quotation (price list).
Specific agreement: delivery time, special requirements, etc.
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Customers have special requirements for products, and must provide the following instructions in the order contract:
(1) Structure length;
(2) Connection form;
(3) Nominal diameter, full diameter, reduced diameter, pipe size;
(4) Operating medium, temperature and pressure range;
(5) Experiment, inspection standards and other requirements;
(6) Various driving devices can be configured in this field according to the special requirements of customers;
If the determined valve type and model are provided by the customer, the customer should correctly explain the meaning and requirements of its model, and sign the contract under the conditions that the supply and demand sides understand and agree.

Contact: Peng gong
Q Q: 2030185432
Mobile: 18918462396(WeChat same number - 24 hours service)
Landline: 021-59718851
E-mail :kunage@126.com