Fixed Forged Steel Trunnion Ball Valve API 6D Class 150 to 2500 for Oil Gas Petrochemical China Manufacturer

Fixed Forged Steel Ball Valve

Fixed forged steel ball valve is a high-performance valve made of forged steel material. Its core design is that the ball is fixed to the valve body through the upper and lower valve stems, and cannot move freely. This valve achieves sealing through the dual action of pre tightening force of the valve seat spring and medium pressure. The sealing surface is usually made of metal or PTFE material, which can withstand high pressure (1.6~4.0MPa) and extreme temperature (-20 ℃~450 ℃). Suitable for high-pressure large-diameter pipelines such as oil and natural gas, it has the characteristics of compact structure, reliable sealing, and long service life.

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Safety and lifespan advantages
Fluid Control and Adaptability
Convenient operation and low maintenance cost
Excellent sealing performance
High strength and durability

Safety and lifespan advantages

Safety and lifespan advantages
01
Double blocking and discharge function: When fully open/closed, the valve seat isolates the medium and discharges the residue through the discharge valve, improving safety.
02
Long life design: the sealing surface is anti-wear, the material is anti-aging, and the service life under normal conditions can reach more than 15 years.

Fluid Control and Adaptability

Fluid Control and Adaptability
01
Low flow resistance design: The full diameter flow channel is consistent with the inner diameter of the pipeline, reducing pressure loss and suitable for high flow transportation.
02
Medium compatibility: corrosion-resistant materials (such as stainless steel, special alloys) and nickel plating processes, suitable for water, oil, gas, corrosive liquids, and particulate media.

Convenient operation and low maintenance cost

Convenient operation and low maintenance cost
01
Low operating torque: Designed with sliding/rolling friction bearings, it is easy to open and close and suitable for manual or automated actuators.
02
Quick opening and closing and online maintenance: 90 ° rotation achieves full open/full close, with quick response; The modular structure supports online disassembly and replacement of seals, reducing downtime.

Excellent sealing performance

Excellent sealing performance
01
Double sealing mechanism: combining pre tightening force and medium pressure to push the valve seat tightly around the ball, ensuring reliable sealing under high pressure; Metal seals are resistant to high temperatures, while soft seals (such as PTFE) are suitable for normal temperature and pressure.
02
Fireproof and anti-static design: Some models use graphite filling and fireproof structure to maintain sealing under extreme conditions, reducing the risk of leakage.

High strength and durability

High strength and durability
01
Forged valve body: using forging technology, the structure is dense, the strength is high, and it can withstand higher pressure and temperature (-20 ℃~200 ℃), suitable for high pressure (1.6~4.0MPa) and harsh working conditions.
02
Fixed sphere design: The sphere is fixed to the valve body through upper and lower valve stems to avoid sealing failure caused by free movement, especially suitable for large-diameter and high-pressure scenarios.

Main Component Materials

Part Name	Material		Part Name	Material
Part Name	GB	ASTM	Part Name	GB	ASTM
O-ring	fluororubber	Viton	sphere	25+ENP	A105+ENP
sealing ring	PTFE	PTFE	bushing	PTFE&Tin Bronze	PTFE&Tin Bronze
valve seat	25	A105	Upper Stem	1Cr13	A182-F6a
spring	60Si2Mn	InconelX-750	shim	Flexible graphite+stainless steel	Flexible graphite+stainless steel
stud	35CrMoA	A193-B7	valve cover	25	A105
Left and right body	25	A105	filler	flexible graphite	Flexible graphite+stainless steel
grease injection valve	assembly	Assembled	support	WCB	A216+WCB
shim	Flexible graphite+stainless steel	Flexible graphite+stainless steel	driving device	assembly	assembly
Lower valve stem	1Cr13	A182-F6a	connecting sleeve	45	AISIC1045
shim	Flexible graphite+stainless steel	Flexible graphite+stainless steel	gland	WCB	A216-WCB
bushing	PTFE&Tin Bronze	PTFE&Tin Bronze	dowel pin	1Cr3	A276-410
valve body	25	A105	Discharge plug	25	A105

Performance Specifications & Dimensions

Nominal pressure PN

1.6/2.5/4.0/6.4/10.0/16.0
Shell F

P x 1.5
Sealing Pressure

P x 1.1
Medium

Water, gas, oil, natural gas, and acid-base corrosive media
Temperature (℃)

-196 ~ 450℃

150Lb
NPS	2	2'/2	3	4	6	8	10	12	14	16	18	20	24	26	28	30	32	36	in
L (RF)	178	190	203	229	394	457	533	610	686	762	864	914	1067	1143	1245	1295	1372	1524	mm
L1 (BW)	216	241	283	305	457	521	559	635	762	838	914	991	1143	1245	1346	1397	1524	1727	mm
H	120	150	180	235	250	280	320	390	420	555	600	635	710	750	800	865	915	980	mm
(d)	49	62	74	100	150	201	252	303	334	385	436	487	589	633	684	735	779	874	mm
w	400	400	600	600	600	600	800	800	800	800	800	800	800	1000	1000	1000	1000	1000	mm
WT (kg)	25	28	49	71	182	277	423	553	747	1481	2266	2460	3904	4939	6362	8149	9000	13570	BW

Note: The pressure range is 1.6MPa~16.0MPa. The above data is for reference only. Please consult the company's sales department for details.

Valve Application

Oil & Gas Transportation

Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.
Chemical Raw Material Control

The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.
High Temperature SteamPipeline in Power System

High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.
Other Industries

Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.