Factory Outlet with CE/ISO Customization Am Series Pneumatic Diaphragm Actuator

• Customization: Available
• Media: Steam/Water
• Certification: ISO
• Model NO.: AM
• Temperature: Ordinary Temperature
• Connection: Flange
• Valve Seat: Single-Seat
• Structure: Diaphragm
• Material: Alloy
• Pressure Rating: Class 150~Class 1500
• Leakage Grade: Leakage Level IV to V
• Driving Mode: Pneumatic
• Transport Package: Land Transportation/Sea Transportation
• Specification: According to the valve
• Trademark: Meiya
• Origin: China
• Production Capacity: 500PCS/Y

Product Description

AM Series Pneumatic Diaphragm Actuator

The AM-type actuators utilize spring-balanced diaphragm actuators that respond to pneumatic output signals from the valve positioner applied to the actuator  diaphragm. The position of the valve plug inside the valve is determined based on signal variations.The zero position setting of the actuator is determined by the compression amount of actuator spring, and the travel range is determined by the stiffness of actuator spring.The AM857 actuator is positive-acting, and the AM867 actuator is reverse-acting.These designs enable reliable on-off operation or throttling control of the valve.

Specification

1.Universality:
A variety of spring stiffness and stroke limiter options.Suitable for almost any regulating valve applications.
2.Excellent linear relation between loading pressure and stroke:
The transversally pressed film moves within the deeper film shell so that the film area changes least over the entire travel range.
3.High dynamic stability and frequency response:
The shallow film shell on the pressure signal side means that the volume on the pressure signal side is smaller, thus minimizing response times.
4.Withstand high thrust:
The transversely pressurized film produces max thrust output within defined dimensional parameters.
5.Long service live:
The rugged heavy-walled cast iron and cast steel construction provides high structural stability, preventing deformation under high pressure, with excellent corrosion-resistant surface coating.
6.Apply to low temperature working condition:
The performance of all configured AD5 and AD6 pneumatic diaphragm actuators has been enhanced, ensuring reliable operation at temperatures as low as -50℃ . It is recommended to use a positioner to ensure response performance in applications below -40℃
7.Rigid connection:
The divdable stem connection assembly features reliable operation and simplified  installation, while effectively eliminating lost motion and ensuring accurate valve positioning.

Physical photo 1

Physical photo 2

Physical photo 3

Main Performances

(Custom configurations available upon request.)

Modle1	AM-857 AM-867
Specification	30, 34, 40, 45,46,50,60,70,70S
Structure & Output mode	Pneumatic film type, straightstroke output
Action	1.Positive action;  2.Reverse action
Chamber volume	Filmshellvolumedisplacement
Stroke	19mm, 38mm, 51mm,76mm,100mm
Operating pressure	0.02-0.1Mpa, 0.04-0.2Mpa
Connector	1/4"NPT,1/2"NPT
Environment temp.	Standard: - 40 to82ºC;Special: -54 to149ºC
Main componentsmaterial	Standard	Film shell:steel	Film: chemigum	Upper film plate:cast aluminium
		Spring:steel	Spring-loaded governor: steel	Spring:steel
		Actuator valve stem:steel	Stroke indicator: stainlesssteel	O-ring: chemigum
		Sleeve: brass	Valve stem connectiondeviceelements:steel	Support: castiron
	Special	Support:steel	Film: silicone rubber	O-ring: silicone rubber
		Connecting bolt:stainlesssteel	Valve stem connecting deviceelements:steel
Movement speed	Depends on actuator's size, stroke, springstiffness,and pressure betweenspringandairsource.
Performance	Intrinsic error: ±5%; Backlash: positive action 3%, reverse action4%

Stroke and thrust

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.