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{"title":"High Precision Flowserve Logix 3800 3800E Digital Valve Positioner Reliable","imgUrl":"https:\/\/img.chinax.com\/nimg\/8e\/4f\/00d38e394133788639c6f91cedd1-200x200-1\/high_precision_flowserve_logix_3800_3800e_digital_valve_positioner_reliable.jpg","attrs":{"Delivery Time":"8-10 weeks","Operating Temperature Range":"-40\u00b0C to +85\u00b0C (-40\u00b0F to 185\u00b0F)","Model Number":"Logix 3800 3800E","Price":"US $1870.00 - 2150.00\/ Set"}}
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{"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"}}
High-precision smart digital valve positioner with double-poppet pneumatic relay, achieving ≤0.25% repeatability for steady and accurate valve flow regulation.
Rugged modular IP66 enclosure with multiple material options, certified SIL 3 capable and ATEX/IECEx/FM approved for explosive hazardous industrial environments.
Universal compatibility with single/double-acting linear & rotary actuators, supports 4-20mA analog, HART 6/7 and Foundation Fieldbus communication protocols.
Technical Specifications
Parameter
Logix 3800
Logix 3800E
Repeatability
≤0.25% F.S.
≤0.25% F.S.
Linearity
±1.25% F.S.
±1.25% F.S.
Air Capacity @ 60 psi
18 SCFM
18 SCFM
Operating Temperature
-55℃ ~ +85℃
-40℃ ~ +85℃
Communication
4-20mA, HART, Foundation Fieldbus
4-20mA, HART 6/7
Enclosure Protection
IP66 / NEMA 4X
IP66 / NEMA 4X
Safety Rating
SIL 3 capable, ATEX / IECEx / FM / CSA
SIL 3 capable, ATEX / IECEx / FM / CSA
Application Industry
Oil & Gas: Wellhead extraction, refinery processing and long-distance pipeline flow control in Zone 1/2 explosive hazardous areas.
Petrochemical & Chemical: Reactor feeding, distillation column and corrosive medium pipeline process regulation.
Power & Pulp Paper: Boiler feedwater regulation, steam pipeline control and pulp production line valve automation.
Common Problems & Solutions
Valve no response to signal
Solution: Verify 4-20mA input wiring and power supply; check air supply pressure and pneumatic line for leakage.
Positioning deviation & inaccuracy
Solution: Run one-button Quick-Cal auto-calibration; inspect valve stem linkage and position sensor for mechanical misalignment.
Valve hunting / oscillation
Solution: Switch gain setting to "HI FRIC" mode; filter compressed air supply to clean contamination inside the pneumatic relay.
Replacement Models
Flowserve Logix 3200MD: Same mounting footprint, cost-effective entry-level direct drop-in replacement.
Flowserve Logix 500 Series: Legacy model retrofit upgrade with full mechanical and functional compatibility.
F-isher DVC6200: Interchangeable retrofit solution for third-party control valve assembly upgrades.
Why Buy From Us
100% original authentic products from authorized channels, with official factory quality warranty.
Professional technical team provides pre-sales model selection and after-sales commissioning guidance.
Flexible customization support for housing material, communication protocol and accessory matching.
Stock & Delivery Time
Standard models are kept in local warehouse; sample orders can be dispatched within 3 working days.
Bulk orders (10 units+) have a 7–15 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.
