Trunnion Ball Valve Drawings

Trunnion Ball Valves are designed for oil and gas and water fluid with bubble seal performance. Each ball valves are tested according to international standard before leaving the factory.

 Standard Specifications:

Design and Manufacture API 6D
Wall Thickness API 6D
Face-to-Face Dimension API 6D
Flange End Dimension ANSI/ASME B16.5 (1” to 24”)
ANSI/ASME B16.47 (26” & up)
Butt-Weld End Dimension ANSI/ASME B16.25
Inspection & Testing API 6D/API 598
Fire Safe Design API 607/BS 6755
Material Nace MR 0175

 

Assembly Drawing

Trunnio ball valve assembly drawings
Trunnio ball valve assembly drawings

 

Material Specifications

No. Name of Part A105/ENP LF2/F316 F316/F316
1 Nut A194 2H ASTM A194 7 ASTM A193 B8
2 Bolt A193 B7 ASTM A320 L7 ASTM A182 F316
3 Bonnet ASTM A105 ASTM A320 LF2 ASTM A182 F316
4 Gasket 304+Graphite 304+Graphite 304+Graphite
5 O-Ring Viton AED Vion AED Vion AED
6 O-Ring Viton AED Vion AED Vion AED
7 Graphite 304+Graphite 304+Graphite 304+Graphite
8 Spring Inconel X-750 Inconel X-750 Inconel X-750
9 Seat Ring ASTM A105 A182 F316 A182 F316
10 Pin Carbon Steel Stainless Steel Stainless Steel
11 Trunnion ASTM A105 A182 F316 A182 F316
12 Bearing Carbon Steel+Graphite Carbon Steel+Graphite Carbon Steel+Graphite
13 Gasket 304+Graphite 304+Graphite 304+Graphite
14 Ball ASTM A105+ENP A182 F316 A182 F316
15 Drain Plug Carbon Steel Stainless Steel Stainless Steel
16 Ring A105+ENP Stainless Steel Stainless Steel
17 Seal Ring Viton AED Stainless Steel Stainless Steel
18 Seat Ring PTFE, Nylon, PEEK PTFE, Nylon, PEEK PTFE, Nylon, PEEK
19 Feet Carbon Steel Carbon Steel Carbon Steel
20 Injection Valve Carbon Steel Stainless Steel Stainless Steel
21 Lifting Lug Carbon Steel Stainless Steel Stainless Steel
22 Body ASTM A105 A182 F316 A182 F316
23 Safety Valve Carbon Steel Carbon Steel Carbon Steel
24 Relief Valve Carbon Steel Stainless Steel Stainless Steel
25 Trunnion Bearing Carbon Steel+Graphite Carbon Steel+Graphite Carbon Steel+Graphite
26 Stem A182 F6A A182 F316 A182 F316
27 Key Carbon Steel Carbon Steel Carbon Steel
28 Thrust Washer PTFE PTFE PTFE
29 O-Ring Viton AED Vion AED Vion AED
30 Stuffing Box ASTM A105 ASTM A350 LF2 ASTM A193 B8
31 Bolt A193 B7 ASTM A320 L7 ASTM A193 B8
32 Packing 304+Graphite 304+Graphite 304+Graphite
33 Adapter ASTM A105 ASTM A105 A182 F316
34 Bolt A193 B7 ASTM A320 L7 ASTM A193 B8
35 Nut A194 2H ASTM A194 7 ASTM A194 8
36 Bolt A193 B7 ASTM A320 L7 ASTM A193 B8
37 Worm Gear Ductile Iron Ductile Iron Ductile Iron

We have full options of trunnion ball valves, such as DIB & DBB, side entry & top entry, soft seat and metal seat.

 

DBB & DIB:

Double block and bleed valve

A trunnion-mounted ball valve with self-relieving seals and a bleed valve to vent the cavity. You close the ball valve and open the bleeder. Now you can de-pressurize the line downstream and open it up to work on it.

 

DIB – DOUBLE ISOLATION AND BLEED

API 6D Definition:

“Single valve with two seating surfaces, with two sealing surfaces, each of which, in the closed position, provides a seal against pressure from a single source, with a means of venting/bleeding the cavity between the sealing surfaces. This feature can be provided in one direction or in both directions”

This application requires either DPE Seat x Self Relieving Seat (DIB-2) or Double Piston Seat x Double Piston Seat (DIB-1). Both configurations of seating comply with The Alberta Occupational Health and Safety code for DIB Isolation. The intent is to provide isolation in applications where servicing of other equipment is required.

On the upstream high pressure side, both double piston and self-relieving seats rely primarily on the high pressure for sealing.

For both Self relieving x DPE and DPE x DPE seating, on the low pressure side where isolation is required, both configurations require the cavity pressure to provide the DPE sealing advantage. If the cavity is vented, the DPE seat will rely on spring force and downstream pressure, the same as a self-relieving seat.

For the DIB Self relieving x double piston (DIB-2) configuration, cavity over pressurization is internally controlled within the line.

 

 

For the DIB Double Piston x Double Piston (DIB-1)configuration, over pressurization of cavity is external.

Single Piston trunnion ball valve
Single Piston trunnion ball valve

Side Entry & Top Entry

Side entry ball valves are valves where the ball is assembled from the side part. The body construction comes in 2 or 3-pieces depending on the size/class. The combination of trunnion mounted balls and unique spring-loaded upstream sealing, provides bubble-tight shut-off and low operating torques, even at extremely high shut-off pressure. Side entry ball valves are the marked standard of ball valve types and should be the default choice for general service.

Top entry ball valves are valves where the ball is assembled from top side part. The top entry design enables maintenance keeping the valve in service: the valve internal parts can be inspected and repaired without removing the valve off the pipeline. The top entry ball valves are used at an application that require a minimal disassembly for in-line maintenances such high pressure application that require in-frequent maintenances or in case of butt welding end.

 

Soft Seat & Metal Seat

 Soft Seat Ball Valve

Soft Seated Ball Valves are for bi-directional seal, bubble seal. The ordinary applicable material is: PTFE, RPTE, PPL, Delrin, PEEK and NYLON.

 

Metal Seated Ball Valve

Metal Seated ball valves are designed for high temperature, abrasive and corrosive applications.

Coating of Metal Seats

Often to prolong their life and especially in connection with severe service applications, Metal Ball valves will undergo a metal finishing process to further insulate the base metal from its environment and prevent corrosion and wear.

Chrome Plating – Hard Chrome Plating has often been utilised in the design of Ball Valve Seats but may be coming under threat from increased environmental concerns over the process. Hard Chrome provides a high level of hardness and wear resistance.

Tungsten Carbide – For more severe environments where severe flashing or hydraulic shock is expected, a harder coating will be required. If temperatures are below 150 Degrees Celsius then most often HVOF applied Tungsten Carbide coating will add a high level of corrosion and wear resistance whilst also offering low porosity.

Stellite 6-Serving Process Hydrocarbon, Abrasive Solids, Bi Directional.

 

Bolted Body & Welded Body

Bolted body trunnion ball valves feature easy mainteanance, as the body and bonnet is easy to be disassembled via the bolting between the body and bonnet.

Welding body ball valves is better to avoid the leakage path between the body and bonnet as the joint is by welding.

 

 

 

© 2019 Relia Valve Co., Ltd. Trunnion ball valve manufacturer

Tel: + 86-577-86373155, E-mail: export@reliavalve.com