Other Instruments & Parts

Description of Cryogenic Gate Valve:The main material of ZECO cryogenic gate valve is selected. Considering from the metallographic aspect, in addition to austenitic steel, copper and aluminum with face centered cubic lattice, general steel will appear low temperature brittleness at low temperature, thus reducing the strength and service life of the valve. When the temperature is higher than -100℃, choose ferritic steel; when the temperature is lower than -100℃, choose austenitic steel; low pressure and small diameter valves can choose copper and aluminum and other materials. Stem and fastener is selected, when the temperature is higher than -100℃, stem and bolt materials adopt Ni, Cr-Mo alloy steel, through appropriate heat treatment, to improve tensile strength and prevent thread bite. Austenitic stainless steel is used when the temperature is higher than -100℃. Low hardness of 18-8 acid resistant steel will cause mutual abrasion between stem and packing, causing leakage of packing.Therefore, the stem surface must be hard chrome plated (thickness 0.04- 0.06mm), or nitride and nickel-phosphorous plated to improve surface hardness.In order to prevent nuts and bolts from biting to death, the nuts are generally made of Mo steel or Ni steel and coated with molybdenum disulfide on the surface of the threads. Features of Cryogenic Gate Valve:1. The valve body of ZECO cryogenic gate valve is able to withstand expansion and contraction due to temperature changes without permanent deformation of the seat structure due to temperature changes;2. The bonnet of ZECO cryogenic gate valve is constructed with a long neck bonnet to protect the stuffing box.The long neck bonnet design also facilitates winding of cooling material;3. ZECO cryogenic gate valve uses flexible wedge or open wedge. These structures maintain a reliable seal regardless of temperature;4. The low temperature properties of the material, such as compression resilience, tightening force, tightening pressure distribution and stress relaxation, are taken into account. Material of Cryogenic Gate Valve: No Part Material 1 Body ASTM A350 LF3 2 Seat Ring ASTM A276 410 + STL 3 Wedge ASTM A350 LF3 + STL 4 Stem ASTM A182 F6 5 Bonnet Gasket Graphite + SS316 6 Bonnet Bolt ASTM A193 B16 7 Bonnet Nut ASTM A194 4 8 Bonnet ASTM A350 LF3 9 Backseat ASTM A182 410 10 Stem Packing Reinforced Graphite 11 Handwheel KTH330-08 We are one of leading china ball valve manufacturers and cryogenic ball valve suppliers. Choose us to buy Valve China.

Minimum Order: 1 bags

Description of Cast Steel Gate Valve:ZECO cast steel gate valve is in controlled under the quality assurance system of production and manufacturing, has met all the international industry standards and user requirements documented procedures. These procedures and control including raw materials purchasing and validation, process control, assembly, testing and shipment, and all the necessary documents. ZECO quality guarantee system has been formed in ISO and API approved manual file. ZECO is ISO 9001 certified and licensed to the API to monogram API 6D product. Each valve is designed to verify compliance by functional and pressure testing. This results in a material test report documenting the chemical and mechanical properties for the pressure additional non-destructive examinations are also recorded and referenced to the valve serial number. Features of Cast Steel Gate Valve China:1. The rising stem of ZECO cast steel gate valve can be designed with precision ACME double thread， This design allows you to open or close almost twice as fast and reduces manual operation;2. The stem packing of ZECO cast steel gate valve is designed to optimally control media leakage from the stem. ZECO adopts CNC machine tools to process the valve stem sealing area, with good smoothness. The straightness of the valve stem is measured by special angle measuring instrument, ensuring the best sealing effect of the valve stem packing;3. The backseat design of ZECO cast steel gate valve can reduce the trouble of removing the valve from the pipeline when the valve needs maintenance during service;4. According to the working conditions, stellited can be used as the material of the valve wedge sealing surface and valve seat ring sealing surface of ZECO cast steel gate valve to enhance the abrasion resistance and corrosion resistance of the sealing ring. Material of Cast Steel Gate Valve: No Part Material 1 Body ASTM A216 WCB 2 Seat Ring ASTM A105 + STL 3 Wedge ASTM A216 WCB + STL 4 Stem ASTM A276 410 5 Bonnet Gasket Graphite + SS304 6 Bonnet Bolt ASTM A193 B7 7 Bonnet Nut ASTM A194 2H 8 Bonnet ASTM A216 WCB 9 Backseat ASTM A182 F6a 10 Stem Packing Reinforced Graphite 11 Handwheel KTH330-08 We are one of a leading supplier valve, providing globe valve made in china. If you want to buy cast steel gate valve china,please feel free to contact us.

Minimum Order: 1 bags

Description of 6 Inch Ball Valve:ZECO Valve Group is a well-known ball valve manufacturer in China. Since its establishment in 1991, it has been producing ball valves for nearly 30 years. In the production process, ZECO regards each valve as a handicraft to keep improving. With the support of high-tech production equipment and high-tech personnel, each product can achieve international quality. ZECO has been a high-tech enterprise in China for many years. Every year, ZECO devotes itself to the research and development of valves with more efficient performance and longer service life. The research and development cost of ZECO accounts for nearly 8% of the company's sales cost. Features of 6 Inch Ball Valve:1. ZECO 6 inch valve is designed with an auxiliary seat emergency seal system.Once the soft seal seat is damaged, emergency sealing can be performed by injecting the appropriate sealant into the auxiliary seal system.Emergency seals can also be used to flush and lubricate seat areas as necessary to keep seat areas clean without affecting sealing.The stem also has an emergency seal design for emergency sealant filling and flushing lubrication;2. ZECO 6 inch valve with fire protection construction.The fire protection structure of the 6 inch ball valve is designed in accordance with API 607. In the event of a fire, the metal seat will be immediately in contact with the ball after the soft seal seat burned, to prevent the valve leakage caused by greater impact;3. ZECO 6 inch valve body wall thickness will have a certain amount of design, carbon steel body, seat, bottom cover are in accordance with ASTM B733 surface chemical coating. In addition, if the user needs special customization, ZECO also has a variety of anti-corrosion materials for selection to meet the working conditions;4. ZECO 6 inch valve in order to prevent the maintenance of the valve stem because of the excessive pressure in the cavity and the phenomenon of flying out, there is a design to prevent flying out of the stem. Material of 6 Inch Ball Valve: No Part Material 1 Body ASTM A216 WCB 2 Bonnet ASTM A216 WCB 3 Ball ASTM A105 4 Seat ASTM A105 +PTFE 5 Stem ASTM A182 F6a 6 Anti-static Device SS304 7 Gasket Graphite + SS304 8 Bolt ASTM A193 B7 9 Nut ASTM A194 2H 10 O-ring Viton A 11 Lever ASTM A216 WCB We are a leading Valve supplier providing international standard valve. Choose us to buy china forged ball valve. If you want to know 5 inch ball valve price and steel ball valve price, feel free to contact us.

Minimum Order: 1 bags

Description of 3 Inch Butterfly Valve:ZECO 3 inch butterfly valve/butterfly valve 3 inch is a small diameter butterfly valve, usually manually operated, and the connection is usually lug type or wafer type, because the advantage of small diameter butterfly valve is that it is simple in accordance with the way, compared with other valve flange connection operation is fast and simple. ZECO as a professional on the wafer and lug type butterfly valve manufacturer, is strict to the material and appearance of the casting, casting usually arrive ZECO factory, will be isolated in the corresponding area waiting for QC inspector inspection, inspector will, in turn, the chemical composition, physical properties of the casting and design is individually and will follow the ERP system into the data of the product review file for later use. ZECO also pays great attention to every detail in the production process, and each process will be tested and recorded by corresponding inspectors in the ERP system. Features of 3 Inch Butterfly Valve:1. ZECO 3 inch butterfly valve can use metal seal structure and resilient seal structure, connection mode can also choose lug type, wafer type and flange connection, the choice of diversity, users can choose according to the actual working conditions to meet the requirements of working conditions;2. ZECO 3 inch butterfly valve has low torque. Although it is small in size, ZECO engineers make every effort to design the product so that users can feel ZECO's improvement in design, rather than rush through it;3. The stem of ZECO 3 inch butterfly valve is designed with anti blow-out structure, which can ensure the maintenance personnel to avoid personal safety damage caused by the pressure of the middle chamber pushing out the stem when replacing the packing;4. The seat and sealing ring of ZECO butterfly valve can be replaced, which ensures the quick and convenient maintenance of maintenance personnel on site. Another products are available such as 6 inch flanged butterfly valve and 4 inch electric butterfly valve. Material of 3 Inch Butterfly Valve: No Part Material 1 Body ASTM A216 WCB + 13Cr 2 Seal Ring Graphite + SS316 3 Retainer Flange ASTM A182 F316 4 Pin ASTM A276 316 5 Disc ASTM A351 CF8M 6 Stem ASTM A276 316 7 Stem Packing Graphite 8 Stem Beating SS316 + PTFE 9 Bolt ASTM A193 B7 10 Nut ASTM A194 2H 11 Yoke ASTM A216 WCB We are one of a leading gate valve manufacturers china, providing globe valve made in china. If you want to know butterfly valve 3 inch price, 3 inch ss ball valve price and ss ball valve price, feel free to contact us.

Minimum Order: 1 bags

Description of 12 Inch Butterfly Valve:Most of ZECO 12 inch butterfly valves operated by hand-wheel, wrench and handles, pay attention to the operation speed, neither too fast nor too slow, and exert force at proper position. End position is vital important to valve performance. In Close position, ball shall be at right position to seat. The closure parts of the valve seat so close to the campaign and leave the valve seat, the valve sealing performance depends in part on the relative pieces of stem-driven closure of the valve seat to remain sealed and the resulting mechanical force. If the role of a particular incident in the direction of the closure of the closure of the pressure to close the case up from the seat, and that this power is essential. Most of the internal closure of the sliding piece in the valve seat does not rely on force stem seals, but this type of valve position to close the right thing or not is very important. In some cases, when the closure parts close to the final closed position, the driving force needed to close the case may be greatly increased, to reach the required position has been shut down parts of an auxiliary compression. Close cases are not accessible or not stopped in the customs location will have a seal leak and damage. Butterfly Valves requires right position to guarantee sealing. When the indicator shows Close position, movement shall be stopped. Features of 12 Inch Butterfly Valve:1. ZECO 12 inch butterfly valve has no dead zone design;2. ZECO 12 inch butterfly valve has live loaded packing system design;3. ZECO 12 inch butterfly valve has fire protection structure design;4. ZECO 12 inch butterfly valve has double safety sealing design. Material of 12 Inch Butterfly Valve: No Part Material 1 Body ASTM A216 WCB + 13Cr 2 Seal Ring Graphite + SS304 3 Retainer Flange ASTM A105 4 Pin ASTM A276 410 5 Disc ASTM A216 WCB 6 Stem ASTM A276 410 7 Stem Packing Graphite 8 Stem Beating SS304 + PTFE 9 Bolt ASTM A193 B7 10 Nut ASTM A194 2H 11 Yoke ASTM A216 WCB We are one of a leading supplier valve, providing globe valve made in china. If you want to know 12 butterfly valve price feel free to contact us.

Minimum Order: 1 bags