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Top Entry Ball Valve


Top Entry Ball Valve


Top entry type ball valve in the pipeline is simple and rapid demolition, maintenance convenient. When the valve in the pipeline fails to repair, do not have to remove the valve from the pipeline, just remove the flange bolts and nuts, the valve cover and stem assembly removed from the valve body, and then remove the ball and valve seat assembly. You can repair the ball and valve seat. This service saves time and minimizes production losses.

Structural Chracteristic

We adopte the Germany advanced technology and apply it in our new products by years of R&D, we develope Rayomond special Top-entry ball valve. With technology up to domestic leading level, these products can compete with the internmtional counterparts. Besides the features borne by the side installed fixed ball valve (see fixed ball valve), they are also given the features below:
1. One-piece valve body, top installed trunnion to fix and support, flanged or butt welded structure.
2. Inconel bellows spring makes the sealed metal seat moving toward the ball, providing the two way seal function of inlet and outlet.
3. Distinctive technology of retractable valve seat, inline replace ability of ball arm, valve stem sealing ring, metal seat and bellows spring, and torque down to the minimum for the ease of operation.
4. Ease of repair and installation, long performance life. Access for repair and replacement of trims may be done with no need to remove the valve from the pipeline, thus to lengthen the service life.
5. Low torque, reliable sealing, and spherical seat different from ordinary ball valves, which can automatically adjust the position of seal.
6 . Preset platform and bolt holes for drive device, and to IS05211. Drive device can be installed according to users’ different requirements
7. DBB (double block and bleed) function.
8. Hand operated top installed ball valve adopts high strength one-piece ball arm structure to ensure the precise positioning of the ball.
9. Anti-blowout protective structure of valve stem to enhance the operational safety of the valve.

Design Feature

Top entry
Soft or Metal sealing
Integral structure
Single piston effect
Double block and bleed
Emergency seal
Zero leakage
Blowout-proof stem
Anti-static design
Fire safe design

Design Standard

Design: API 6D/API608
Face to face: API6D/ASME16.1
Test: API598/API6D
Fire safe: API607/API6FA
End connection: ASME:16.5/ ASME:16.47

Technical Specification

Size: 2”~40”
Class: 150#~2500#
Connection: flange/butt weld
Operation: Manual/ Worm Gear/ Pneumatic actuator/ Electric actuator
Temperature: -196°C to +650°C
Application: Pipeline/petroleum/chemical /power plant/Iron and steel industry


Material Option

Body: Carbon steel/stainless steel/hastelloy/inconel alloy/monel
Trim: A105/SS304/SS316/F304/F316
Stem: 17-4PH/SS316/F316/F6a

Performance Specifications



Design Drawing of Manual Top Entry Ball Valve










The Material of Main Parts



Notes: 1 .Materials are subject to users’ requirements
2. Material of Anti-sulfur valve is according to NACE MR0175

Design Drawing of Top Entry Ball Valve



The Material of Main Parts



Note: 1 .Materials are subject to the temperature&pressure of service fluid.
2. Any other materials more than these listed in the chart are at user’s option.
3. Materials in accordance with NACE MR-O1-75(latest edition) are available for sour gas service.
Remarks: RF stands for Raised Flange Connection; BW stands for Buttwelded Ends Connection; RTJ stands for Ring Joint Connection.

Main Outline Dimensions

20170509164608 20170509164627 20170509164646 20170509164659 20170509164714 20170509164733


Product Picture

1-161205140202-50 1-161205140202-53 1-161205140622 1-161205140622-50 1-161205140642





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Ball valve, Industrial Valves

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