The pressure seal globe valves are designed in accordance with BS1873 and ASME B16.34 for service of high temperature and high pressure and are widely used in fossil fuel power plant. Compared with bolted bonnet joint valves, it provides absolute reliable sealing of the bonnet joint, so that the Pressure Seal Valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.
The two openings for medium flowing in and out are in the same direction, forming an angle of 180°. In addition, at seat and disc seal surface are over-lay with iron-base alloy or Co-base alloy or carbide alloy for long duration. For large size valves will be designed with main disc and vice disc type, and medium flow from up disc to down disc, that the operation torque will be greatly decreased and the seat tightness performance are more reliable.
Design standard as per: BS1873,ASME B16.34, GB/T 12235, JB/T3595.
Generally, lift is just 1/4 of the valve seat port, ensuring a short opening and closing time.
Only one sealing face is designed on the valve body and valve disc,
For large size valves will be designed with main disc and vice disc type, and medium flow from up disc to down disc.
Full stellite overlay seat sealing surface
Good for manufacturing process and easy to maintain.
The valve is designed as a back seat sealing structure.
Use flexible and woven graphite collaboration type packing.
Absolute bonnet joint leak proof.
Optional by-pass design.
Body material: carbon steel, stainless steel, alloy steel
Nominal diameter: 1/2"~24"(DN15~DN600)
Pressure range:Class150~2500(PN10~PN420)
End connection: RF, RTJ, BW
Working temperature:-29℃~560℃
Operation: handwheel, gear box, electric, etc.
Pressure Seal Globe Valve, Pressure Seal Bonnet Globe Valve, Pressure Seal Stainless Steel Globe Valve, High Pressure Seal Globe Valves Zhejiang Zhongcheng Valve Co.,Ltd. , http://www.apivalvestar.com
In addition to coaxial heat exchangers, buyers are also more interested in angular contact ball axes, accounting for 26%. It can withstand both radial and axial loads. The greater the contact angle, the higher the axial load carrying capacity. 
From the figure we can see that the coaxial heat exchanger became the most popular search term in June, accounting for 28% of the total bearing products. This product is mainly composed of concentric inner tube and outer tube. It has high safety and good processability and is not easy to leak. It is especially suitable for heat pump systems.
In the search of buyers, bearings, couplings and spherical bearings also accounted for a certain proportion, accounting for 7%, 5% and 4% respectively.
Design Features
Product Range
Analysis: The proportion of "bearing" products in the hardware industry from January to June
The degree of concern is second only to the angular contact ball axis and the coaxial heat exchanger. It is a machine tool high-precision bearing and an imported bearing, accounting for 17% and 13% respectively. Imported bearings are limited to relatively domestic bearings.