Trunnion Ball Valves

TBV and TBVH Series Trunnion Ball Valves

A trunnion ball valve is a type of quarter-turn valve that is widely used in various industries for controlling the flow of fluids. It is named after the trunnion, which is a fixed shaft or extension on which the ball is supported. The trunnion design provides stability and reduces the operating torque required to operate the valve.The main components of a trunnion ball valve include a hollow ball with a bore through its center, seats, stem, trunnion, and seals. The ball has a hole through which the fluid flows when the valve is open. The seats are located on either side of the ball and provide a tight seal when the valve is closed.The trunnion is a fixed shaft that supports the ball and helps to maintain its position. It absorbs the thrust generated by the pressure of the fluid, which allows the valve to handle high-pressure applications with ease. The stem connects to the ball and is used to rotate the ball to open or close the valve.Trunnion ball valves can be classified into two types based on the construction of the ball: floating ball and trunnion-mounted ball valves. In a floating ball valve, the ball is not fixed to the trunnion and relies on the pressure of the fluid to sit against the seals. In a trunnion-mounted ball valve, the ball is fixed to the trunnion, providing additional support and sealing capability.These trunnion ball valves are known for their excellent sealing properties, high flow capacity, and ability to handle high-pressure and high-temperature applications. They are commonly used in industries such as oil and gas, petrochemicals, power generation, and water treatment.Trunnion ball valves are available in various sizes, pressure ratings, and materials to suit different operating conditions. They can be operated manually or with the help of actuators for automated control. Additionally, they can be designed to accommodate different end connections, such as flanged, threaded, or welded ends.

Trunnion Ball Valves Features:

• Fixed ball with double sealing
• Automatic compensation of seat sealing
• Low operating torque
• Handle as an indicator of flow direction
• Positive handle stop
• Handle color options are available
• Compact maximum-flow design
• Trunnion-stye ball: Prevents ball blowout.
• 2-or 3-way flow patterns
• Spring-load seats: Provide leak-tight integrity in both low and high-pressure systems, reducing seat wear from pressure surges.
• Leak-tight performance testing for every valve at the maximum working pressure with nitrogen
• TBV Maximum working pressure:6000 psig (413 bar）
• TBVH Maximum working pressure: 10000 psig （689 bar）
• Working temperature: 0°F to 450°F（-18°℃ to 232°C）

Trunnion Ball Valves Materials of Construction:

Item	Component	Valve Body Material
		316 Stainless Steel
		2-way	3-way
		Material Grade/ASTM Specification
1	Handle	Nylon or Aluminium
2	Panel Nut	316SS/B783
3	Body	316 SS/A479	316 5S/A182
4	End Connector	316 SS/A479
5	Seat Retainer Backup Ring	Reinforced PTFE
6	Seat Retainer O-ring	Fluorocarbon FKM
7	Seat Retainer Guide	316 SS/A276
8	End Connector Seal	PTFE/D1710
9	Trunnion O-ring	Fluorocarbon FKM	—
10	Trunnion Backup Ring	Reinforced PTFE	—
11	Trunnion Bearing	—	PEEK
12	Ball	316 SS/A276	S21800/A276
13	Seat Spring	Alloy X-750/AMS 5542
14	Seat Retainer	316 SS/A276
15	Seat	PTFE or PEEK or PCTFE
16	Stem	316 SS/A276
17	Stem Washer	Reinforced PTFE	PEEK
18	Stem O-ring	Fluorocarbon FKM
19	Secondary Stem Backup Ring	—	PTFE/D710
20	Primary Stem Backup Ring	—	PEEK
21	Pin	Stainless Steel
22	Set Screw	Stainless Steel

Trunnion Ball Valves Types:

3 Way Female Threaded Trunnion Ball Valves	3 Way Double Ferrules Trunnion Ball Valves	Female Threaded Trunnion Ball Valves

Trunnion Ball Valves Dimensions:

1. 2-way Trunnion Ball Valves (TB Series-6000PSI)

Basic OrderingNumber	ConnectionType and Size	Orificein.(mm)	Cv	Dimension, in.(mm)
				A	B	C	D	E	F
-TB-FN2-5	1/8 Female NPT	0.19(4.8)	1.2	2.94(74.7)	1.47(37.3)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-FN4-5	1/4 Female NPT	0.19(4.8)	1.2	2.94(74.7)	1.47(37.3)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-FN6-7	3/8 Female NPT	0.19(4.8)	1.2	3.93(99.8)	1.97(49.9)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-FN8-9	1/2 Female NPT	0.19(4.8)	1.2	4.25(108)	2.13(54.0)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-FT4-5	1/4 Tube	0.19(4.8)	1.2	4.09(103.8)	2.04(51.9)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-FT6-5	3/8 Tube	0.19(4.8)	1.2	4.25(108)	2.13(54.0)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-FT8-5	1/2 Tube	0.19(4.8)	1.2	4.60(116.8)	2.30(58.4)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-MT4-5	6mm Tube	0.19(4.8)	1.2	4.09(103.8)	2.04(51.9)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-MT8-5	8mm Tube	0.19(4.8)	1.2	4.14(105.2)	2.07(52.6)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-MT10-5	10mm Tube	0.19(4.8)	1.2	4.25(108)	2.13(54.0)	0.50(12.7)	1.88(47.7)	1.57(40.0)	2.56(65.0)
-TB-MT12-5	12mm Tube