Self-operated micro-pressure regulating valve

Self-operated control valve is a kind of intelligent valve that does not need external power and automatically adjusts the flow and pressure through the medium's own pressure, which is widely used in a variety of working environments such as heating, HVAC, water supply and drainage, chemical industry and petroleum, etc. The valve is suitable for water, steam, air and some corrosive media. The valve is suitable for water, steam, air and some corrosive media, with good sealing performance and corrosion resistance. Self-operated control valves rely on the media pressure difference to automatically adjust the spool position, to achieve accurate flow and pressure control, without power or gas source, easy to operate and energy saving and environmental protection. Advantages of the product include simple structure, easy maintenance, sensitive response, stable regulation, suitable for remote or unattended places. Its function not only covers the automatic adjustment of flow, but also effectively protects the pressure of the pipeline network and ensures the safe operation of the system. Due to its high efficiency, energy-saving and intelligent features, the self-operated control valve has become an important equipment for the automated adjustment of modern industrial and municipal pipeline networks.

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products

Self-operated micro-pressure regulating valve

Model: ZZVP

Subtitle：Precision pressure regulating valve

The self-acting micro-pressure regulator valve is a precision-engineered solution designed for ultra-fine pressure control in low-pressure systems. It utilizes the energy of the process fluid to automatically regulate and maintain set pressure levels with superior accuracy, making it ideal for laboratory equipment, gas analyzers and precision instrumentation applications. Its compact...

Tags:pressure regulating valve

Classification:Self-operated control valves

Working conditions:drugs manufacturing factory, chemical plant, labs

Product Overview

Applicable working conditions

Laboratory equipment: precise pressure control in gas chromatography and mass spectrometry.

Gas distribution: micro-pressure regulation in analytical gas lines and calibration systems.

Medical devices: pressure management in respiratory equipment and anesthesia machines.

Industrial instrumentation: low pressure air and gas control in precision manufacturing.

Main characteristics

Self-acting operating mechanism
No external power is required: operation utilizes the energy of the process fluid.
Direct-acting design: simple and reliable with very few moving parts.
Set pressure range: 0.5-50 kPa (0.07-7.25 psi), adjustable with a trimmer spring.

Valve Design
Compact size: miniature design for integration into tight spaces.
High sealing performance: ANSI Class IV (standard) / Class VI (optional).
Pressure range: For inlet pressures up to 100 kPa (14.5 psi).

Flow Rate Characteristics
Valve insert options: linear or equal percentage flow characteristics.
Flow coefficient (Cv): 0.01-0.5 (DN3-DN10).
Customizable flow curves: tailored to specific process requirements.

Materials and Durability
Body material: 316L stainless steel (CF8M), brass, or PTFE-lined body.
Valve inner member material: Stellite 6 alloy, tungsten carbide or ceramic coating.
Seals: PTFE, Viton or EPDM (-20°C to 120°C).

compatibility
Process fluids: air, nitrogen, argon and other non-corrosive gases.
Accessories: pressure gauge, trim knob and in-line filter.

Product Advantages

Ultra-fine control: maintains set pressure within ±1% accuracy.

Energy saving: No external power supply is required, reducing operating costs.

Compact design: ideal for integration into small systems.

Low Maintenance: Simple design with minimal moving parts.

Comparison with Pilot Operated Valves

specificities	Self-operated miniature control valves	Externally actuated control valves
power source	Process Fluid Energy	External power (pneumatic or electric)
accurate	±1% of set pressure	±0.5% pressure of set pressure
safeguard	Low (fewer components)	High (complex pilot system)
(manufacturing, production etc) costs	Lower initial and operating costs	Higher initial and operating costs

Selection Guide

High precision: Select ceramic-coated valve internals for ultra-fine control.

Corrosion-resistant media: Choose 316L body and PTFE seals.

High Cycle: Rotary seat design with over 20,000 cycles.

Cleanroom applications: Choose electropolished surfaces (Ra <0.4μm).

Medium of use

petroleum, Water/hot water, oils, Air (compressed air), vapor

working condition

drugs manufacturing factory, chemical plant, labs

summarize

Self-acting micro-pressure regulating valves are reliable and cost-effective solutions for ultra-fine pressure control in low-pressure systems. Its compact design, low maintenance requirements and high energy efficiency make it ideal for laboratory, medical and precision industrial applications. With optional customization features and an extended 5-year warranty, it ensures long-term operational efficiency and cost savings.

Product Parameters

Nominal diameter	DN15-DN100 (1/2"-4")
Nominal pressure	PN10-PN16 (Class 150)
Applicable temperature	-20°C to 120°C (depending on seal)
leakage rate	ANSI Class IV (standard) / Class VI (optional)
Setting pressure range	0.5-50 kPa (0.07-7.25 psi)
Valve Material	316L stainless steel (CF8M), PTFE lined, WCB
sealing material	PTFE, Viton, EPDM