Miniature Control Valve
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AIR OPERATED CONTROL VALVE - THE ‘M’ VALVE
The M Valve is a miniature air operated proportional control valve for use on liquids or gases. Available for 1/4”and 1/2”line sizes, a wide range of inner valve trims offer flow control with CV values from 3.0 down to 0.00008. Each valve has a control range of as much as 40:1 and with interchangeable trims the M Valve is ideal for pilot plant control, representing a scaled down version of larger process control valves.
With linear, equal percentage and quick opening control characteristics, the M Valve also has specific application in dosing, sampling and blending systems. Standard valve material is forged 316 Stainless Steel: alternatives of Hastelloy, Monel, PVC or carbon steel body materials are available with Stellite or other trim materials as required.
The standard Air actuator uses a 3-15 psi control input of either Air-to-Open or Air-to-Close. For higher line pressure applications a standard top mounted positioner is recommended, incorporated into the valve. For high integrity applications, alternative designs of valve seal are available. Extension bonnets or cooling fins are used for cold service or high temperature duty.
FEATURES
The M Valve is a miniature air operated proportional control valve for use on liquids or gases. Available for 1/4”and 1/2”line sizes, a wide range of inner valve trims offer flow control with CV values from 3.0 down to 0.00008. Each valve has a control range of as much as 40:1 and with interchangeable trims the M Valve is ideal for pilot plant control, representing a scaled down version of larger process control valves.
With linear, equal percentage and quick opening control characteristics, the M Valve also has specific application in dosing, sampling and blending systems. Standard valve material is forged 316 Stainless Steel: alternatives of Hastelloy, Monel, PVC or carbon steel body materials are available with Stellite or other trim materials as required.
The standard Air actuator uses a 3-15 psi control input of either Air-to-Open or Air-to-Close. For higher line pressure applications a standard top mounted positioner is recommended, incorporated into the valve. For high integrity applications, alternative designs of valve seal are available. Extension bonnets or cooling fins are used for cold service or high temperature duty.
FEATURES
- 1/4” or 1/2” proportional control
- Interchangeable trims
- CV values 0.00008 to 3.0
- Air operated
- Stainless Steel valve and trim standard
- Linear or equal percentage control characteristics
- Accurate low flow control
Full Product Specification
VALVE SPECIFICATION| Body | Stainless Steel 316 S31 (Options: carbon steel, Monel, Hastelloy,PVC) |
| Trim | 1/2”Valves:Sizes A-F:Stainless Steel 1/4”Valves:Sizes F-N:Stainless Steel 1/4”Valves: Sizes P0-P9: Drive Stem: 316 Stainless Valve plug: Stellite 6 Valve seat: 416 Stainless Steel (options:Hastelloy,Monel,Stellite) |
| Cv/Kv Values | See tabulation on datasheet |
| Control Range | Trims A-N: 40:1 Trims P0-P9: 12:1 |
| Leak Rate | Less than 1% of max Cv/Kv when closed (the M valve is not an isolating valve) |
| Packing | Solid PTFE Standard (Option: Chevron seal) |
| Connections | 1/4” or 1/2” NPT female (Options: flanges or weld fittings) |
| Pressure | 150 bar max (subject to valve packing) |
| Fluid Temperature | -75ºC to 190ºC (Options to 400ºC with cooling fins) |
| Valve Stroke | 1/4” valve 11mm 1/2” valve 14mm (Visual position indicator on valve stem) |
ACTUATOR SPECIFICATION
1. STANDARD PNEUMATIC ACTUATOR
| Signal Input | Director acting 3-15psi clean dry instrument Air |
| Suitable Applications | Valve trims sized A-N,where pressure drop across valve does not exceed: Trims A-B: 63psi Trim C: 85psi Trims D-E: 140psi Trims F-J: 360psi Trims K-N: 1000psi |
| Positioning Accuracy | Affected by pressure drop across valve: maximum offset 5% at DP quoted above |
| Connection Thread | 1/4”NPT |
| Variants | Air-to-Open or Air-to-Close |
| Housing | Die-cast aluminium |
| Rolling Diaphragm/Seals | Nitrile rubber |
| Temperature | -20ºC to +50ºC ambient |
2.PNEUMATIC POSITIONER
| Type | Top mounted positioner built onto standard Air motor |
| Suitable Applications | Valve Trims P0-P9 Valve Trims A-N, where increased positioning accuracy is required, or where pressure drop across valve exceeds the figures quoted for standard pneumatic actuator |
| Air Supply | Max: 100psi/min: 5psi above required valve actuation pressure |
| Signal Input | 3-15psi |
| Connection Thread | 1/4”NPT |
| Variants | Air-to-Open or Air-to-Close |
| Temperature | -20ºC to 50ºC ambient |
Recommended Products
M-Valve Spares Kit
The Platon M-Valve can offer years of reliable and trouble free service, in order to keep your Platon M-Valve operating efficiently and effectively RM&C can offer you a number of spares and replacement parts for you instrument. The recommended spares include:
Platon AGTF Anaesthetic VA Flowmeter
Platon glass tube anaesthetic gas flowmeters are manufactured for medical equipment suppliers worldwide, with actual scales and markings tailored to individual equipment requirements.
Tubes and floats are supplied as a calibrated set, normally without a frame. These are then incorporated into the manufacture of an anaesthetics trolley or other equipment.
FEATURES
Platon FV Automatic Flow Controller
Platon Type FV Flostats automatically regulate the flow of liquids or gases by using available line pressure. Once adjusted to the required value, flow is maintained accurately at this rate independent of supply pressure fluctuations or varying back pressure downstream of the meter. No electrical power or external flow measurement input is required – the Flostat control system uses the available line pressure to control the balanced control valve, maintaining the flow rate at the operator preset value.
Accurate flow control is vital to a wide variety of processes, for example blending and dosing applications. By keeping the required fluid delivery rate constant, a Flostat can ensure consistent product quality irrespective of process liquid head changes throughout a batch.
Flostat Type FV Flow controllers are used in flow control systems such as aircraft fuel delivery systems, to prevent the hazard of excessive flows and protect metering systems from over-speeding. On natural gas or fuel oil delivery systems to multiple burners, Flostat units can maintain optimum flow rate to each burner independently.
Available in sizes from ½" to 4", all Type FV units can be fitted with a flow scale plate calibrated for process conditions.
FEATURES
UKAS and Traceable Calibration
Roxspur Measurement & Control Ltd is an ISO 9001:2008 company, we offer UKAS and traceable calibration under BS/EN ISO17025 accredited procedures. Our certificate generation systems are purposely geared to meet the strict and specific requirement of the Aerospace industry.
Calibration
Based at our factory in Sheffield our accredited laboratories are available to provide either on-site or in-house calibration to either UKAS or national standards. We cover Temperature (up to 2,200ºC), Pressure (up to 1,200 bar), Flow (up to 2,500 L/min) and Electrical parameters and provide certification using the latest technology.
Our team of experienced on-site engineers hold accreditation for the on-site calibration of equipment including autoclaves, furnaces, thermocouples and probes, scales and balances, ovens and chambers, indicators and controllers, pressure and electrical. We cover the full spectrum of industry sectors. All calibration standards used meet the requirements of Table 3 of AMS 2750D, whether in the laboratory or on site, ensuring full compliance with the specification. To find out more about our on-site services please click here.
We supply thermocouples calibrated and certified to meet the requirements of Table 1 of AMS 2750D appropriate to customer specified usage.
Aerospace Heat Treatment Specialists
From the supply of a single thermocouple to fully managed service contracts, by working in partnership with our customers we can assist in obtaining and maintaining NADCAP approval. To find out more about our specialist aerospace services please click here.
Certification
Certificates generated are designed to meet the requirements of AMS 2750D with the option of UKAS certificates for added peace of mind.
M-Valve Spares Kit
The Platon M-Valve can offer years of reliable and trouble free service, in order to keep your Platon M-Valve operating efficiently and effectively RM&C can offer you a number of spares and replacement parts for you instrument. The recommended spares include:- Trim set
- Seal kits (including bellofram, trim packing, o-ring, and bonnet sealing washer)
Platon AGTF Anaesthetic VA Flowmeter
Platon glass tube anaesthetic gas flowmeters are manufactured for medical equipment suppliers worldwide, with actual scales and markings tailored to individual equipment requirements.Tubes and floats are supplied as a calibrated set, normally without a frame. These are then incorporated into the manufacture of an anaesthetics trolley or other equipment.
FEATURES
- Instantaneous in response
- Reliable in operation
- High visibility scale fused into flow tube surface
- Float rotation gives operator confidence of correct performance
- Borosilicate glass tube, anti-static coated
- Flow ranges from 10:1 to 150:1 available
- Individual flow calibration
- Bold scale markings
- Standard gases – air, oxygen, nitrous oxide
- Bespoke designs available
Platon FV Automatic Flow Controller
Platon Type FV Flostats automatically regulate the flow of liquids or gases by using available line pressure. Once adjusted to the required value, flow is maintained accurately at this rate independent of supply pressure fluctuations or varying back pressure downstream of the meter. No electrical power or external flow measurement input is required – the Flostat control system uses the available line pressure to control the balanced control valve, maintaining the flow rate at the operator preset value.Accurate flow control is vital to a wide variety of processes, for example blending and dosing applications. By keeping the required fluid delivery rate constant, a Flostat can ensure consistent product quality irrespective of process liquid head changes throughout a batch.
Flostat Type FV Flow controllers are used in flow control systems such as aircraft fuel delivery systems, to prevent the hazard of excessive flows and protect metering systems from over-speeding. On natural gas or fuel oil delivery systems to multiple burners, Flostat units can maintain optimum flow rate to each burner independently.
Available in sizes from ½" to 4", all Type FV units can be fitted with a flow scale plate calibrated for process conditions.
FEATURES
- Fully automatic flow control
- No power required
- 1/2" – 4" line sizes
- 10:1 control range
- Fast response
- Suitable for hazardous liquids or gases
UKAS and Traceable Calibration
Roxspur Measurement & Control Ltd is an ISO 9001:2008 company, we offer UKAS and traceable calibration under BS/EN ISO17025 accredited procedures. Our certificate generation systems are purposely geared to meet the strict and specific requirement of the Aerospace industry.Calibration
Based at our factory in Sheffield our accredited laboratories are available to provide either on-site or in-house calibration to either UKAS or national standards. We cover Temperature (up to 2,200ºC), Pressure (up to 1,200 bar), Flow (up to 2,500 L/min) and Electrical parameters and provide certification using the latest technology.
Our team of experienced on-site engineers hold accreditation for the on-site calibration of equipment including autoclaves, furnaces, thermocouples and probes, scales and balances, ovens and chambers, indicators and controllers, pressure and electrical. We cover the full spectrum of industry sectors. All calibration standards used meet the requirements of Table 3 of AMS 2750D, whether in the laboratory or on site, ensuring full compliance with the specification. To find out more about our on-site services please click here.
We supply thermocouples calibrated and certified to meet the requirements of Table 1 of AMS 2750D appropriate to customer specified usage.
Aerospace Heat Treatment Specialists
From the supply of a single thermocouple to fully managed service contracts, by working in partnership with our customers we can assist in obtaining and maintaining NADCAP approval. To find out more about our specialist aerospace services please click here.
Certification
Certificates generated are designed to meet the requirements of AMS 2750D with the option of UKAS certificates for added peace of mind.
