Precision Stainless Steel Flange Connection Self-Operated Pressure Control Valve for Room Environment Air Control

• Customization: Available
• Medium: Gas, Steam, Liquid
• Nominal Diameter: 25-300
• Model NO.: COV-2502
• Temperature: ≤350°C
• Transport Package: Wooden Box
• Specification: 100*100*100
• Trademark: Yoonad
• Origin: China
• Production Capacity: 50000pieces/Year
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 20.000kg

Product Description

Product Description

Our pressure regulating valve is a core component designed for automatic pressure stabilization and control in industrial and commercial piping systems. Engineered to adapt to diverse media and working conditions, it delivers reliable performance for air, gas, water, and other compatible fluids, making it ideal for applications like cabin pressure balance, pipeline pressure regulation, and equipment pressure protection.

Featuring a robust structure with high-quality materials (brass, 304/316 stainless steel options for the body; stainless steel or cemented carbide for the valve core; NBR/FKM/PTFE seals), this valve withstands working pressures from low to high (up to 3000psi) and operating temperatures ranging from -20°C to 200°C, ensuring durability and corrosion resistance. The threaded connection (compatible with 25mm aluminum pipes and DN25 specifications) enables easy installation, while the self-acting design (no external power required) allows automatic response to pressure fluctuations—adjusting valve opening in real time to maintain the set pressure within a precise range (±0.5-5psi).

Equipped with an optional electronic pressure gauge interface, it supports linkage with regulators for enhanced control flexibility, such as automatic shutoff when pressure reaches the threshold. Whether for indoor environments, industrial production lines, or precision equipment, this pressure regulating valve combines stability, efficiency, and user-friendliness to meet your fluid pressure control needs.

Product Advantages

How does valvePrecise Pressure Stabilization: Automatically maintains media pressure within a set range (accuracy up to ±0.5-5psi), resisting upstream pressure fluctuations to protect equipment from damage caused by unstable pressure.

Automatic Adjustment: Real-time responds to pressure changes via built-in sensing components (diaphragm, piston), adjusting valve opening instantly without manual operation, reducing labor and maintenance costs.

Versatile Functionality: Capable of pressure reduction, boosting, and compensation, compatible with air, water, gas, oil, and other media, suitable for industrial, commercial, and civil applications.

Easy Installation: Supports threaded, flanged, and other connection methods (e.g., threaded type for 25mm aluminum pipes), featuring a compact structure that requires no complex pipeline modification.

No External Power Required (Self-acting Type): Driven by the medium's own pressure, eliminating the need for electricity or compressed air, ideal for scenarios without additional power supply—energy-saving and low-failure.

Low Maintenance: Simple internal structure with easily replaceable wearing parts (seals, valve cores), ensuring a long service life (3-5 years for regular materials).

Wide Pressure & Temperature Range: Valve body options include brass, 304/316 stainless steel, adapting to low to high pressure (≤3000psi) and normal to high temperature (-20℃-200℃) for diverse working conditions.

Corrosion & Leakage Resistance: Seal material options (NBR, FKM, PTFE) suit regular or corrosive media, providing strong sealing performance with no risk of media leakage.

Universal Pipeline Compatibility: Supports various calibers (DN15-DN200) and works with aluminum, steel, plastic pipes, etc., offering high versatility.

Overload Protection: Adjustable pressure threshold triggers automatic throttling or shutoff when overpressure occurs, preventing pipeline/equipment burst due to excessive pressure.

How does valve work

A pressure regulating valve operates on the principle of dynamic force balance to automatically maintain media pressure within apreset range, requiring no manual intervention (especially for self-acting models). Here's a step-by-step breakdown of its working mechanism:

First, the valve is equipped with a built-in sensing component—typically a diaphragm or piston—connected to a pressure-sensitive chamber that communicates with the downstream pipeline (or the system needing pressure control). A preloaded spring on the valve core sets the target pressure: when installing, you adjust the spring tension to match your desired operating pressure (e.g., 30psi for cabin pressure balance).

As media (such as air, water, or gas) flows through the valve, the sensing component continuously detects the downstream pressure.

If the actual pressure is lower than the set value, the force exerted by the media on the sensing component is weaker than the spring's preload. This pushes the valve core open wider, increasing the flow area and allowing more media to pass through—gradually raising the downstream pressure.

Conversely, if the downstream pressure exceeds the set value, the media's pressure on the sensing component overcomes the spring force. This pushes the valve core to close partially (or fully, for shutoff-enabled models), reducing the flow area and restricting media flow. As the flow decreases, the downstream pressure drops back to the preset range.

For self-acting pressure regulating valves (the most common type for industrial and commercial use), this entire process is driven solely by the media's own pressure—no external power (electricity, compressed air) is needed. For enhanced control (e.g., threshold-based shutoff or remote monitoring), optional add-ons like electronic pressure gauges or regulators can be integrated: the gauge feeds real-time pressure data to the regulator, which fine-tunes the valve's operation to ensure even more precise pressure stability.

This cycle of "detection → adjustment → stabilization" repeats continuously, enabling the valve to adapt to upstream pressure fluctuations and maintain consistent, reliable pressure for the connected system or equipment.

Product Parameters

Nominal Diameter (DN):Nominal pipe size (e.g., DN15, DN25, DN50) or actual pipe compatibility (e.g., 25mm aluminum pipe compatible) — matches the pipeline caliber for installation.

Connection Type:Threaded (BSP/NPT), flanged, socket weld, or compression — indicates how the valve connects to the pipeline.

Working Pressure Range:Operating pressure limit (e.g., 100-1000psi, 0-20MPa) — including inlet pressure (upstream) and outlet pressure (downstream set pressure).

Working Temperature Range:Temperature adaptability (e.g., -20℃~200℃, 20-70℃) — must match the media's operating temperature to avoid material failure.

Media Compatibility:Compatible fluids (e.g., air, gas, water, oil, corrosive solutions) — defines the valve's applicable medium type.

structure	Regulating
type	Adjustable Relief Valves
place of origin	China
	Jiangsu
application	General
customized support	OBM, ODM, OEM
power	Other
port size	DN25-300
model number	COV-2501
brand name	Yoonad
media	Gas
temperature of media	High Temperature, Low Temperature, Medium Temperature
warranty	2 years
Medium	Gas,liqud,steam
Body material	Stainless Steel 304/316L
Size	25-300
Packing	Wooden Box
Working Temperature	below 350 Degree
Connection	Flange Connection
Valve Operation Type	pressure control valve
Function	control pressure
Product name	Self-operated pressure control valve
Feature	Easy