A105 Carbon Steel 3000 Psi 1/2"-10" Water/Oil/Gas/Power Plant Pipeline Backflow Prevention High Pressure Check Valve

• Customization: Available
• Media: Oil
• Temperature: Ordinary Temperature
• Material: Stainless Steel
• Connection Form: Clamp
• Structure: Check
• Pressure: High Pressure
• Function: Automatic, Preventing Media Backflow
• Sealing Form: Gland Packings Globe Valve
• Flow Direction: Unidirection
• Standard: JIS
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Transport Package: Wooden Case
• Specification: customized
• Trademark: Yoonad
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year
• Package Size: 120.00cm * 80.00cm * 80.00cm
• Package Gross Weight: 60.000kg

Product Description

Product Description

High-pressure check valves are specialized automatic flow control devices engineered to prevent reverse flow in industrial systems operating under extreme pressure conditions. Designed to withstand pressures typically exceeding 10,000 psi (689 bar) and high temperatures, these valves are constructed from robust materials such as forged steel, stainless steel, or alloy steel, ensuring exceptional strength, durability, and resistance to corrosion and fatigue.

Featuring a precision-engineered closure mechanism—commonly a lifting disc, swing disc, or piston—they operate passively without external controls, relying solely on media pressure and gravity to function. When forward flow occurs, the pressure of the fluid (liquid or gas) pushes the closure element open, creating a streamlined path for efficient passage. If flow reverses, the closure element immediately seats against a precision-machined sealing surface, forming a tight, leak-tight barrier to block backflow. This prevents damage to critical equipment, such as pumps, compressors, or turbines, and safeguards system integrity.

Equipped with reinforced bodies, high-strength internals, and specialized seals, high-pressure check valves are suitable for oil and gas exploration, chemical processing, power generation, and other demanding industries where reliable backflow prevention under extreme pressure is non-negotiable. Their robust design ensures long service life and minimal maintenance, making them a critical component in high-pressure pipeline systems.

DN	mm	15	20	25	32	40	50	65	80
L(RF)	mm	130	150	160	180	200	230	290	310
L1(BW)	mm	140	152	165	184	203	229	279	318
H	mm	100	105	120	130	135	149	154	169
WT(RF)	Kg	5.4	7	7.4	8.5	12.5	16	25	30
	RMB
DN	mm	350	400	450	500	600	700	800	900
L(RF)	mm	980	1100	1200	1250	1450	1650	1850	2050
L1(BW)	mm			-
H	mm
WT(RF)	Kg	-		-	-
	RMB
DN	mm	15	20	25	32	40	50	65	80
L(RF)	mm	130	150	160	180	200	230	290	310
L1(BW)	mm	152	178	203	216	229	267	292	318
H	mm	100	105	120	130	135	149	154	169
WT(RF)	Kg	5.4	8	8.4	9.2	13.5	17	26	31
	RMB
DN	mm	350	400	450	500	600	700	800	900
L(RF)	mm	980	1100	1200	1250	1450	1650	1850	2050
L1(BW)	mm
H	mm
WT(RF)	Kg
	RMB

Product Advantages

A – Absolute High-Pressure Resistance
Engineered to withstand extreme pressure conditions (exceeding 10,000 psi/689 bar) and high temperatures. Maintains structural integrity in demanding industrial systems without deformation or failure.

B – Robust Construction Quality
Crafted from forged steel, stainless steel, or premium alloys—materials selected for exceptional mechanical strength, fatigue resistance, and corrosion protection. Built to endure harsh, high-stress environments.

C – Consistent Leak-Tight Sealing
Precision-machined seating surfaces and high-pressure-compatible seals form an impenetrable barrier. Prevents media leakage even under fluctuating pressure, safeguarding system efficiency and safety.

D – Dependable Flow Control Precision
Linear-motion design enables accurate throttling and on-off operation. Ideal for high-pressure systems requiring precise regulation of flow rates and pressure to optimize process performance.

E – Enhanced Durability & Longevity
Reinforced valve bodies, high-strength stems, and wear-resistant internals minimize operational stress. Reduces component degradation, extending service life and lowering replacement costs.

F – Flexible Application Versatility
Safely handles liquids, gases, and aggressive media (chemicals, hydrocarbons, steam) in high-pressure scenarios. Suitable for oil and gas, chemical processing, power generation, and industrial manufacturing.

G – Guarded Operational Safety
Built with safety-focused features (reinforced structures, pressure-resistant seals) to mitigate risks of system overpressure or media leakage. Protects critical downstream equipment (pumps, compressors) from damage.

How does valve work?

High-pressure check valves operate via a precision-engineered, automatic mechanism to prevent reverse flow in extreme-pressure industrial systems. At their core is a robust valve body—constructed from forged steel, stainless steel, or alloy steel—housing a closure element (lifting disc, swing disc, or piston) designed to withstand intense pressure forces.

When forward flow occurs, the pressure of the media (liquid or gas) pushes against the closure element, overcoming internal resistance to open a streamlined path. This allows efficient fluid passage with minimal pressure drop, even under extreme operating pressures.

If flow reverses, the closure element immediately reacts to the pressure shift. Gravity and reverse flow pressure drive it back onto a precision-machined seating surface, forming an airtight, leak-tight seal. This blocks backflow instantly, protecting critical downstream equipment (pumps, compressors, turbines) from damage caused by pressure surges or contamination.

The valve requires no external controls, relying solely on media pressure and mechanical design for reliable, passive operation. Its reinforced construction and specialized seals ensure durability and performance in oil and gas, chemical processing, and power generation applications where high-pressure backflow prevention is critical.