Industrial Valve Positioner Fisher 3610J 3620J 3620JP 3620JPR 3720 Series Pneumatic Control Valve Positioner Supplier

Fisher 3610J / 3620J Electro-Pneumatic Valve Positioner

Product Overview

Fisher 3610J is a pneumatic positioner and the 3620J is its electro-pneumatic version with an integrated I/P converter. Both are designed for accurate positioning of sliding-stem control valves. They are simple, rugged, and widely used in process plants where reliable analog control is needed. The 3620J accepts a 4–20 mA signal and converts it to pneumatic output for the actuator.

Technical Specifications

Application Industry

• General process control in chemical plants
• Power plant auxiliary systems
• Water and wastewater treatment
• HVAC and utility lines
• Older pneumatic control loops

Common Problems & Solutions

• Problem: Slow response or hunting → Solution: Check supply air pressure and clean nozzle/orifice
• Problem: Output drift over time → Solution: Simple zero and span adjustment
• Problem: Contaminated air → Solution: Install upstream filter-regulator

Replacement Models

• Older Fisher 3582 / 3582i series
• Fisher DVC2000 digital positioner (for upgrade to smart control)

Why Buy From Us

• Genuine Emerson Fisher product with factory test report
• Local technical support and calibration service
• Competitive pricing with full warranty
• Fast spare parts availability

Stock & Delivery Time

• Standard 3620J models: 4–8 weeks typical lead time

RFQ Form Please provide:

• Actuator model and stroke length
• Required input signal (for 3620J)
• Supply air pressure available
• Ambient temperature range
• Quantity & target delivery date