JFG Series High Sulfur Resistant Natural Gas Pre-Filter Element For Sour Gas Wellhead

For midstream operators running high-sulfur sour gas pipelines, frequent coalescer cartridge damage caused by sharp iron sulfide dust is a costly headache. Ordinary thin-layer gas filter cannot block hard sulfide particles, which scratch the delicate fiber layer of coalescer filter cartridge within weeks, triggering unplanned pipeline shutdowns and millions in lost throughput. LEFILTER, a 15-year listed industrial filter manufacturer (Stock Code:837936), developed JFG series anti-acid gas filter element specially for sour natural gas filter working conditions. This heavy-duty gas filter cartridge adopts double-layer acid-proof fiberglass winding, greatly expanding solid pollutant storage capacity, and perfectly matches all JMG and PCHG coalescer cartridge filter as front-stage protection. After solid interception by JFG gas cartridge filter, raw sour gas enters coalescer filter element for liquid removal, then flows into ST separator cartridge to eliminate secondary liquid entrainment. You can view full sour gas filtration solutions via gas filter element category, and our complete RO membrane & UF membrane module water treatment consumables are listed on Water Filter Element.

How JFG Sour Gas Gas Filter Element Blocks Sulfide Dust Efficiently

High-H2S raw natural gas flows from outer wall to inner core of JFG gas filter cartridge. The outer thick acid-resistant fiber layer captures large iron sulfide chunks and pipeline scale; the middle dense tortuous fiber matrix traps micro sulfide powder through inertial collision. All solid contaminants are locked on the outer surface of this natural gas filter, never penetrating to scratch downstream coalescer filter cartridge. Clean solid-free gas flows inward and enters the coalescing stage for water mist separation. The low-pressure-drop fiber layout of gas cartridge filter avoids extra compressor power consumption, even under long-distance full-load sour gas transmission, far superior to ordinary single-layer gas filter products.

Core Industrial Technical Specifications

• Filter Media: Double-layer acid-proof composite fiberglass for gas filter element

• Optional Filtration Precision of gas filter cartridge: 0.3 / 1 / 5 / 10 / 25 / 50μm

• Max Working Pressure of sour natural gas filter: 12MPa

• Allowable Minimum Operating Temperature: -45℃ for northern cold gas fields

• Matching Back-end Parts: JMG / PCHG coalescer cartridge filter, ST separator filter element

Each JFG gas filter completes multi-pass high-sulfur aging and collapse resistance testing before factory delivery, fully interchangeable with mainstream PECO and Faudi filter separator housings, compatible with all types of Oil & Gas Purification Equipment wellhead and trunk line facilities.

4 Unique Sour Gas-Oriented Core Advantages

1 High Sulfur Corrosion Resistance
Special acid-resistant fiber and galvanized end caps adapt long-term H₂S-containing raw gas operation of gas filter cartridge.

2 Ultra-Large Solid Dirt Storage
Double thick fiber extends replacement cycle 3x longer than ordinary natural gas filter, reduce shutdown frequency.

3 Hard Particle Anti-Scratch Barrier
Completely protect expensive coalescer filter cartridge from sulfide abrasion damage.

4 Wide Temperature Adaptability
Stable performance from -45 cold wellheads to 110℃ hot pipeline stations.

Main Industrial Application Scenarios

JFG gas filter element is the mandatory first-stage component for sour gas wellheads, high-sulfur trunk pipelines, coal chemical gas workshops and offshore gas extraction platforms. Matched with coalescer cartridge filter and separator cartridge, it builds a full three-stage solid-liquid separation system to protect compressors and precision flow meters from sulfide wear and liquid corrosion.

Full JFG Series Complete Model List

JFG12, JFG24, JFG36, JFG324, JFG372, JFG524, JFG536

Other Related Products

JMG Large Flow Coalescer Cartridge

Professional FAQ For Sour Gas Operators

Q1 Why choose JFG instead of standard gas filter for high sulfur gas?
A1 Ordinary fiber will corrode quickly under H₂S environment, JFG acid-proof gas filter cartridge solves long-term sulfide abrasion of coalescer filter cartridge.

Q2 Can JFG fit existing PECO filter separators directly?
A2 Unified outer dimension design, no housing transformation required for direct replacement of original gas cartridge filter.

Q3 What differential pressure value triggers replacement of JFG natural gas filter?
A3 Replace when system differential pressure reaches 16–18 psid, service life depends on raw gas sulfide content.

Q4 Does LEFILTER offer custom length JFG gas filter element?
A1 Yes, we support customized end cap, length and sealing materials for non-standard sour gas filter vessels.