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{"title":"Pressure Reducing Valve KOSO PRF300 PRF400 And EPA 801 Valve Positioner With","imgUrl":"https:\/\/img.chinax.com\/nimg\/82\/68\/3b05602f8494e0b5287aa7bb66bd-200x200-1\/pressure_reducing_valve_koso_prf300_prf400_and_epa_801_valve_positioner_with_chinese_brand_control_valve.jpg","attrs":{"Brand Name":"KOSO","Model Number":"PPA801","Minimum Order Quantity":"1","Price":"Negotiation"}}
{"title":"PN29 Butterfly Control Valve With 3400MD Digital Positioner High Performance","imgUrl":"https:\/\/img.chinax.com\/nimg\/a7\/51\/c81d527b4c43f8887d00d08b7110-200x200-1\/pn29_butterfly_control_valve_with_3400md_digital_positioner_high_performance.jpg","attrs":{"Brand Name":"Serck Audco","Model Number":"Slimseal","Certification":"CE","Place of Origin":"China"}}
{"title":"High Precision Electro-pneumatic Spirax Sarco EP6 Positioner Replacement Part","imgUrl":"https:\/\/img.chinax.com\/nimg\/d9\/e3\/134bfda201af1bfad191cc7a3a31-200x200-1\/high_precision_electro_pneumatic_spirax_sarco_ep6_positioner_replacement_part_compatible_various_brands_actuators.jpg","attrs":{"Model Number":"EP6","Payment Terms":"T\/T","Operating Temperature Limits":"-58\u00b0F to 185\u00b0F (-50\u00b0C to 85\u00b0C)","Price":"US $1900.00 - 2200.00\/ Set"}}
{"title":"Wuzhong Instrument Control Valve with Valmet Me-tso Neles ND7000 Series Smart","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/f2\/984649aee5bbc66fbb1852272baf-200x200-1\/wuzhong_instrument_control_valve_with_valmet_me_tso_neles_nd7000_series_smart_valve_positioner.jpg","attrs":{"Brand Name":"Neles\/Valmet","Model Number":"ND7000","Place of Origin":"China","Minimum Order Quantity":"1"}}
Compact smart electro-pneumatic valve positioner with a 16-bit microprocessor, delivering accurate flow control for both linear and rotary pneumatic actuators.
Built-in Quick-Cal one-button auto-calibration and HART 7 protocol, simplifying on-site commissioning and enabling remote parameter tuning via ValTalk software.
Rugged corrosion-resistant cast aluminum housing with IP66 ingress protection, certified by ATEX, FM and CSA for safe deployment in explosive hazardous areas.
Technical Specifications
Parameter
Specification
Input Signal
4-20mA DC with HART 7 Protocol
Repeatability
≤0.5% F.S.
Linearity
<1% F.S.
Air Supply Range
1.4 – 10.3 bar (20 – 150 psig)
Air Consumption
0.05 SCFM @ 60 PSI
Operating Temperature
-40°C ~ +80°C (-40°F ~ 176°F)
Enclosure Protection
IP66 / NEMA 4X
Hazardous Certifications
ATEX, FM, CSA (Intrinsically Safe)
Application Industry
Oil & Gas: Wellhead flow control, pipeline transportation and refinery processing in Zone 1/2 hazardous environments.
Petrochemical & Chemical: Reactor feed regulation, distillation column control and corrosive medium pipeline management.
Power & Water Treatment: Boiler steam control, circulating water regulation and municipal sewage treatment valve automation.
Common Problems & Solutions
No response to input signal
Solution: Inspect 4-20mA wiring and power supply; verify air supply pressure and check pneumatic lines for leakage.
Inaccurate valve positioning
Solution: Re-execute Quick-Cal automatic calibration; check stroke linkage and position sensor for mechanical misalignment.
Unstable HART communication
Solution: Confirm cable impedance and length within specification; eliminate electrical interference and check IS barrier compatibility.
Replacement Models
Flowserve Logix 520MD: Entry-level same-platform model with identical mounting footprint for direct drop-in replacement.
Flowserve Logix 3200MD: Upgraded model with enhanced diagnostic functions, fully compatible with existing installation interfaces.
Flowserve Logix 500 Series: Legacy model retrofit solution for in-place upgrade without extra mechanical modification.
Why Buy From Us
100% original authentic products from authorized Flowserve channels, backed by official quality warranty.
Professional technical team provides pre-sales model matching and after-sales commissioning guidance.
Customized support for mounting kits, accessories and certification options to fit different project needs.
Stock & Delivery Time
Standard models are in local warehouse; sample orders can be dispatched within 3 working days.
Bulk orders (10 units+) have a 40–60 working day lead time with export-standard fumigation-free packaging.
Multiple shipping options: DHL/FedEx express for small orders, sea/air freight for bulk cargo, door-to-door service available.
