20 Years Factory with CE/ISO Customization Labyrinth-Type Pressure Reducing Valve China Supplier

• Customization: Available
• Media: Steam/Water
• Certification: ISO
• Model NO.: MT
• Temperature: -29 ~ 545ºC
• Connection: Welding
• Valve Seat: Single-Seat
• Structure: Diaphragm
• Material: Cast Steel
• Pressure Rating: Class 600~Class 2500
• Leakage Grade: Leakage Level IV to V
• Flow Characteristics: Linear/Equal Percentage
• Driving Mode: Pneumatic/Electric
• Transport Package: Land Transportation/Sea Transportation
• Specification: 1” ~12”
• Trademark: Meiya
• Origin: China
• Production Capacity: 500PCS/Y

Product Description

MT Series Labyrinth-type Feedwater Control Valve

Considering the working conditions with high pressure differences, if single-seat or plunger type control valves are selected, the high flow rate medium flowing through the valve can cause cavitation, flash erosion, as well as vibration and noise, which can lead to valve damage and very easily result in system control failure. According to the parameters of the desuperheating water, our company has selected the labyrinth high-pressure differential water supply regulating valve with advanced technology. The main features are as follows:

1.Starting from the mechanism of fluid mechanics, by adopting and applying the technology of velocity control principle, multi-stage pressure reduction is utilized to eliminate problems such as cavitation, flash erosion, vibration and noise, providing comprehensive system control solutions for many different application fields.

2.The labyrinth flow channel can achieve speed control of the regulating valve

3.The labyrinth valve can prevent the valve core from generating high flow rates while ensuring the final control effect: throughout the entire stroke of the valve, it effectively controls the medium pressure and flow rate. The labyrinth valve cage disperses the fluid into many streams to minimize the flow rate of the medium as much as possible. Each fluid channel is composed of a specific number of right-angle turns and forms a labyrinthine flow channel. During this process, the flow velocity of the flowing medium is reduced to a certain extent by each turn. The number of turns N, which is used to disperse the maximum expected pressure difference in the valve core. This principle is applied to the valve core discs of labyrinth valves, enabling the medium velocity of each disc and each channel to be controlled within the predetermined range. By opening different numbers of discs with the valve plug, the entire valve stroke control completely limits the medium velocity to the predetermined value. This design is a complete contrast to the multi-hole throttling valve core: single-seat throttling only converts potential energy into kinetic energy, but this results in an extremely high speed rise. The labyrinth valve core can control the speed and ensure that the pressure at the contraction fracture surface is above the vaporization pressure (the pressure after the valve is higher than the vaporization pressure), thereby preventing the formation of cavitation and flash evaporation phenomena.
4.The labyrinth core pack consists of many labyrinth plates, which are processed by electro-etching to form many channels, and each channel can pass through a certain amount of medium. The channel is provided with medium resistance by a series of right-angle bends. Based on the different parameters of various units, through precise calculation, different numbers of bends are selected to ensure that the medium velocity flowing through the labyrinth core package is always limited to 30m/s. Referring to the mature experience abroad, when the flow rate is less than 30m/s, the erosion effect on the throttling element is the least.

Specification

Structural Features:

1. Utilizes fluid dynamics and velocity control principles

2.Multi-stage pressure reduction eliminates cavitation, flashing, vibration, and noise

3.Labyrinth flow channels enable precise velocity regulation

Technical Parameters:

1.Nominal Diameter: 10" ~ 12"

2.Nominal Pressure: ANSI CL600 ~ CL2500

3.Operating Temperature: -29°C ~ 545°C

4.Connection Standard: Butt-Welded: ASME B16.25-2007

5.CLASS IV (Metal Seat, without balanced seal ring) CLASS V (Metal Seat, with balanced seal ring)

6.Flow Characteristic: Equal percentage, linear

Physical photo 

 Physical photo 2

Physical photo 3

Performance comparison between single-seat valves and labyrinth valves

Project	Single-seat valve	Labyrinth valve
Structural form	Simple	Complex
Number of flow channels	Single-flow path	Multi-flow path
Ways to relieve stress	Single stage	Multi-level
Maintenance cycle	Short intervals	Long interval
Noise level	High noise	Low noise
Vibration level	Large vibration	Small vibration
Flow velocity	High	Low
Anti-cavitation performance	General	Excellent
Flow characteristics	It is achieved through the valve core surface	It is achieved through the maze disk
Processing cost	Low	High
Resistance characteristic	Low flow resistance	Large flow resistance

Basic ordering requirements

For customized desuperheating and pressure-reducing devices or valves, please provide the corresponding data as presented in the table below.

Device model
Device name					Quantity (sets)
Inlet steam flow rate Q(t/h)			Range of change
Imported steam pressure P1(MPa)			Range of change
Imported steam temperature T1(℃)			Range of change
Rated outlet steam pressure P2(MPa)			Deviation range
Rated outlet steam temperature T2(℃)			Deviation range
Pressure of deheated water Pb(MPa)			Range of change
Temperature of deheated water Tb(℃)			Range of change
Noise(dBA)		The layout method and structural form of the device			1,Horizontal     2,Vertical
Dimensions of imported pipelines	Flange	Dimensions of the outlet pipeline		Flange	The size of the desuperheating water pipe
	Welding			Welding
Control mode
The required documents
Others	1,Electric control      2,Pneumatic control       3,Hydraulic control
enforce standards Special requirements

After Sales Service

Warranty period: Within 12 months from the date of equipment acceptance and normal use, or 18 months from the date of arrival, whichever comes first
Training: Remote operation/maintenance training

After-sales service commitment: Lifetime provision of spare parts and maintenance services. During the product warranty period, any manufacturing quality issues shall be repaired or replaced by the supplier

Company Profile

Hangzhou Meiya Generating Equipments Co., Ltd.

Hangzhou Meiya Power Generation Equipment Co., Ltd. was established in 1998.It has wholly-owned subsidiaries: Anhui Meiguan  Fluid  Control  Co.,  Ltd. and Zhejiang Meiguan Energy Saving Engineering Co.,  Ltd. The corporation specializes in control systems and industrial applications for steam, air, hot water, and other process fluids, delivering optimal energy-saving and environmentally friendly solutions for steam thermal systems. Core product lines encompass: temperature and pressure reducing devices, pressure reducing valves, control valves, turbine bypass valves, severe service regulating valves, steam ejectors, condensate recovery systems, plate heat exchanger units, in-line steam separators, steam traps, industrial valves, and instrumentation control systems. These products find extensive application across  power generation, metallurgy, petrochemical, biochemical, and other industrial sectors.

The company has a dedicated, cooperative, and united development and engineering technical service team, which brings together elites in machinery, power, chemical, computer, automation control, automation instrumentation, HVAC, air conditioning, water supply and drainage, etc., including 11 experts with senior titles. The company adheres to the quality policy of  "leading technology, high quality and efficiency,customer first,and abiding by the contract". Meiyaleverages its unique talent and technological advantages to maintain an industry-leading position in product development and quality.

With a comprehensive quality management system certified by ISO 9001:2008, the company obtained the Special Equipment Manufacturing License of the People's Republic of China issued by the General Administration of Quality Supervision, Inspection and Quarantine in 2010, covering pressure regulating valves  (Class  A1), temperature and pressure reducing devices (Class B), globe valves, check valves (Class  A2), gate valves, ball valves, and butterfly valves (Class B).

Why Choose Us?

Other Products

20 years of production experience

Professional technical team

Faster and more accurate response speed

Competitive pricing & bulk discounts

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Locator

Executive body

FAQ

Q: What's the lead time for orders?
A: Customized units require 60-90 days.

Q: Can I request a customized valve size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.