Imported pneumatic low temperature control valve
Imported pneumatic cryogenic control valve product overview
The pneumatic low-temperature control valve imported by YLOK from the United States is a deformed product of single-seat and double-seat control valves. It is different from the normal temperature regulating valve in that it adopts a long-necked upper valve cover to make the packing work at normal temperature. It is suitable for the adjustment of medium (such as liquid oxygen, liquid nitrogen, etc.) under the low temperature and strong state of -60～-250℃. To ensure the accuracy of adjustment, a valve positioner must be used.
Working principle of imported pneumatic low temperature control valve
Imported pneumatic low-temperature control valve consists of two parts: pneumatic membrane actuator and low-temperature resistant single-seat and double-seat valves. The signal pressure from the regulator is input into the air chamber of the pneumatic membrane actuator to generate thrust, and the valve core is driven by the connecting rod. The change of the valve core position changes the flow cross-sectional area of the valve and realizes the adjustment of the medium flow.
Technical parameters of imported pneumatic cryogenic control valve
Valve body form: straight-through casting ball valve
Nominal diameter: DN25～300mm
Nominal pressure: PN1.6, 2.5, 4.0, 6.4MPa
Flange standards: GB/T9113, JB/T79
Connection form: flange (FF RF RTJ), welding (SW BW), thread (applicable within 1")
Valve cover form: low temperature type -10～-196℃, ultra low temperature type -196～-250℃
Gland type: bolt compression type
Sealing packing: V-type PTFE packing, impregnated polytetrafluoroethylene asbestos packing, asbestos textile packing, graphite packing
Trim
Spool form: single seat, cage, sleeve spool
Flow characteristics: linear, equal percentage
Executing agency and attachments, function form
Actuator type: ZHA/B multi-spring film actuator
Actuator model: ZHA/B-22 ZHA/B-23 ZHAB-34 ZHA/B-45 ZHA/B-56
Effective area (cm2): 350 350 560 900 1400
Stroke (mm): 10, 16 25 40 40, 60 100
Spring range (KPa): 20～100 (standard), 20-60, 60-100, 40-200, 80-240
Diaphragm material: rubber clip nylon cloth, ethylene propylene rubber clip nylon cloth
Air supply pressure: 140～400KPa
Air source interface: RC1/4"
Environment temperature: -30～+70℃
Available accessories: positioner, air filter pressure reducer, position valve, travel switch, valve position transmitter, handwheel mechanism, etc.
Action form: air-to-close type (B)—valve position open when losing air (FO); air-to-open type (K)—valve position closed when losing air (FC)

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.
download Google:
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