Product Overview

The J41W stainless steel globe valve features flanged connection with pipeline-matched bore size. The disc moves vertically along the seat centerline through stem thread transmission for precise opening height control. Specially designed for pipeline systems requiring accurate flow regulation and tight shut-off in petroleum, chemical, pharmaceutical and other industries.

Core Advantages

• Precise Regulation– Stem thread transmission enables millimeter-level opening control
• Bidirectional Sealing– Dual sealing surfaces on disc and seat provide two-way shut-off
• Low Leakage– Metal hard seal structure achieves ANSI Class V leakage rate
• Corrosion Resistance– Full stainless steel (CF8/CF8M) body and trim
• Long Service Life– Hard chrome plated stem for excellent wear resistance
• Easy Operation– Optimized packing structure reduces operating torque by 30%
• Simple Maintenance– Bolted bonnet design allows quick maintenance

Technical Parameters

Material Combinations

Working Principle

When rotating the handwheel clockwise, the stem drives the disc downward along the seat centerline to gradually close the flow path; counterclockwise rotation lifts the disc to open the flow path. The large contact area between disc and seat enables precise flow regulation and tight shut-off.

Structural Features

• Low Flow Resistance Body– Streamlined flow path design reduces pressure loss
• Anti-Rotation Structure– Disc guide slot prevents seal face wear from rotation
• Back Seat Design– Forms secondary seal between stem and stuffing box at full open position
• Blowout-Proof Stem– T-slot structure prevents stem ejection under pressure
• Replaceable Seat– Threaded seat allows easy replacement after wear

⚠ Important Installation Notes

1. Must install according to body arrow direction (standard flow is low-inlet/high-outlet)
2. Reverse installation (high-inlet/low-outlet) is prohibited as it increases operating torque and prevents proper closing
3. After installation, cycle valve 3-5 times fully open/closed to break-in sealing surfaces

Typical Applications

• Petrochemical Industry– Refining units, cracking gas pipelines, catalytic systems
• Pharmaceutical Engineering– Clean pipeline systems, bioreactor inlets/outlets
• Food & Beverage– CIP cleaning systems, fermentation tank control lines
• Power Industry– Boiler feedwater systems, steam trap pipelines
• Specialty Gases– High-purity gas delivery, specialty gas distribution systems

Selection Guide

Maintenance

Routine Maintenance

• Monthly: Check packing gland for leakage
• Quarterly: Lubricate stem threads
• Annually: Perform seal performance test

Scheduled Maintenance

• Every 2 Years: Replace packing
• Every 3 Years: Inspect seat/disc wear
• Every 5 Years: Complete disassembly inspection and pressure test

Customization Services

This product can provide the following customized solutions:

• Sanitary Design(3A/SMS Standard)
• Fire-Safe Construction(API 607 Certified)
• Anti-Sulfur/Hydrogen Treatment(NACE MR0175)
• Vacuum Service Version(10^-6 Torr)