Pneumatic Pilot Cage Guided Control Valve with Digital Positioner

Pneumatic Pilot Cage Guided Control Valve with Digital Positioner

Overview Product Description Pilot Operated Control Valves provide unmatched tight shut-off performance for high-tempera
Basic Info.
Model NO. ZXMA series
Material Stainless Steel, Carbon Steel, Alloy
Type Pilot Cage Guide
Flow Characteristic Equal-Percentage, Linear, Quick-Opening
Leakage Fci 70-2 Class VI
Nominal Pressure Pn16~Pn100, Cl150~Cl600
Nominal Diameter DN65~DN400 (2 1/2"~16")
Transport Package Plywood Box
Specification Low Temp, Ordinary Temp, High Temp, Bellows Seal,
Trademark JIANENG
Origin China
HS Code 8481804090
Production Capacity 5000PCS/Year
Product Description

Product Description

Pilot Operated Control Valves provide unmatched tight shut-off performance for high-temperature applications(Working temperature >230ºC). In high temperature and high-pressure conditions, even if the seat has a small leaking can also cause serious erosion of the plug and seat. Therefore the Control valve has good sealing performance is very important in these cases. The general method to improve the sealing performance is to increase the actuator size, However, the Pilot Operated Control Valves improve the sealing performance by the pressure difference between the inlet and outlet of the valve, this structure can reduce the size of the actuator, and improve the sealing performance.

1. Fluid flow is from up to down, pilot balanced Cage Guided Control Valve has a separate pressure-balanced pilot plug compared to the regular cage control valve.
2. The main plug is closed tightly by the output force of the actuator and the unbalanced force from fluid pressure difference while the valve is closed. The pilot plug is closed tightly by the output force from the actuator and the spring reaction force.
3. The flow capacity in the channel of the pilot plug and seat should be bigger than the flow capacity in the guided ring and the gap between plug and cage, otherwise, the pressure balance cannot be established and this would lead to valve closure.
4. The opening of the pilot plug is controlled within the range of 10% of the valve opening, otherwise the range of the small flow valve can not be adjusted.
5. Small size, compact structure, good sealing performance
6. High ability of cut-off, long service life. This series can be used for evacuation and shut-off, especially on occasions with high temperature, high pressure, and large valve size.
Cavitation can happen even if the valve seat has a small leakage in high temperature and high-pressure difference occasions, and this would lead to valve trim damage with long-term erosion to the plug and seat. So it is vital to keep complete sealing without any leakage for the valve on these occasions. Normally, increasing the output force would promote the sealing level. For a pilot-balanced cage-guided Single Seated Control Valve, the actuator size can be reduced and sealing performance can be promoted by using the unbalanced force from the flow pressure difference. And this makes the product even more competitive.

2Gasket8Pilot Disc
3Cage9Packing Spring
4Bonnet Gasket10Packing
5Bonnet11Packing Follower
6Main Disc12Packing Flange

Product Parameters


Nominal Diameter (mm)6580100125150200250300350400
Rated Flow CoefficientLinear691101762754406901100176027503960
Equal Percentage631001602504006301000160025003600
Rated Travel (mm)4060100120140
Nominal PressurePN16~PN100, CL150~CL600
Flow CharacteristicLinear, Equal Percentage
Pneumatic ActuatorDirect-Acting (PDTC)PM650BPM1000BPM1600BPS400/500B
Reverse-Acting (PDTO)PM650KPM1000KPM1600KPS400/500K
Diaphragm Area (cm2)65010001600/
Spring Range (KPa)20~100, 40~200, 80~240, 160~320 (Piston)
Air Pressure (MPa)0.14, 0.25, 0.28, 0.4, 0.5 (Piston)
AccessoriesPositioners, I/P Transducers, Volume Boosters, Position Transmitters, Limit Switches, Solenoid Valves, Handwheels, etc. are optional

*For important details such as size and weight, please feel free to contact the sales engineer.

Process VariabilityPneumatic Control Valve
Ordinary TempLow Temp, High Temp
Intrinsic Error <(%)±1.0±2.5
Hysteresis Error <(%)1.02.5
Deadband <(%)0.41.0
Start and End Position Deviation<(%)±1.0±2.5
Rated Travel Deviation<(%)+2.5+2.5

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Pneumatic Pilot Cage Guided Control Valve with Digital Positioner


Q: Are you a manufacturer or a trading company? A: We are a manufacturer located in Hangzhou City, Zhejiang Province, China
Q: What brand of your company can supply?
A: JIANENG or OEM service.
Q: Do you accept customized orders? A: YES! We can supply customized valves.
Q: Is there have MOQ?
A: No. we can accept 1 set, but there has an additional cost of $150.00(the process of export) if the order value is within $2000.00
Q: What are your payment terms?
A: As per our company's policy, we normally have below 3 payment terms, we also can negotiate with both parties before confirming the order.1) 100% T/T or West Union in advance that order value is within $ 2,000.00 USD.2)30% T/T advance+70% balance before the shipment for the order value above $2,000.00USD.3)L/C at sight for the order value above $ 50,000.00 USD.
Q: Can you give me a discount?
A: As you know, we are the manufacturer, so please trust us that our prices are competitive. If the quantity is large, we can consider giving you a discount
Q: How about the delivery schedule?
A: Delivery schedule depends on product type. Therefore, please consult with the sales team for a specific delivery schedule when you inquire quote. The company is making an effort to keep the delivery schedule, which is the promise to the customer. The company will improve your satisfaction degree by delivering the necessary product as soon as possible.
Q: What is the valve warranty?
A: Our valve warranty period should be 18 months from the date of shipment or 12 months after installation, whichever occurs first
Q: Do you have any valves in stock?
A: There have several series of valves in stock, and they can be delivered within two weeks. You can consult the sales staff for details.

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