G4XZ Sleeveline

G4XZ Sleeveline

The Durco G4XZ Sleeveline plug valve meets API 641 1st edition and ISO 15848-1-BH-CO3 emission standards, ensuring compliance with environmental regulations related to fugitive emissions.

This versatile valve effectively reduces unwanted emissions in critical applications, including HF alkylation units and other hazardous, toxic, and sub-zero fluid services, such as:

Blending

Crude desalting

Gas plants

Isomerization

Light ends

Sulphur plants

Chlorine

Anhydrous hydrochloric acid (HCl)

Hydrofluoric acid (HF)

Its fire-safe design adheres to API 607 7th edition and ISO 10497 2010 standards (for external leakage), enhancing safety for both plant operations and personnel. Additionally, the G4XZ achieves a soft seat shut-off rating of API 598, ensuring zero leakage.

Brand: Durco
Category: Plug
Industries Chemicals: Basic (Organic & Inorganic), Specialty (Fine & Consumer), Petrochemicals, Oil & Gas: Downstream Processing
Face-to-Face Standard ASME B16.10
Guiding NA
Trim Fluoropolymers: TFE, TFM, TMHT
Valve Size 1/2” to 20”
Pressure Class Standard ASME B16.34, API 599
Design Temperature -45°C to 315°C
Bonnet Standard Bonnet with ISO 5211 Mounting Pad
Packing Graphite/Graphite (G4XZ); PTFE/PTFE (G4X), fugitive emissions compliant (API 641, ISO 15848-1)
Pressure Class Range Class 150, 300
Trim Characteristics NA - On-Off Service
Seating Fluoropolymer sleeve for tight shutoff, fire-sealed for external leakage (API 607)
End Connections Raised Face Flange, Screwed End, Butt Weld, Socket Weld, Flat Face, Ring Type Joint, Small & Large Groove Flange
Shut-Off Classification API 598, Zero Leakage
Body Plug - Monel®, carbon steel, stainless steel and corrosion-resistant alloys

Reduced fugitive emissions: The continuous-loaded packing system complies with ISO 15848-1-BH-CO3 and API 641 1st edition standards, significantly minimizing fugitive emissions.

Simplified plug and packing adjustment: A plug adjuster allows for precise in-line adjustments of both the plug and seat, preventing through-line leakage and re-energizing the primary stem seal. Independent packing adjustment ensures discrete control of the stem seal without affecting the plug adjustment.

Improved reliability: A self-sealing, dynamic bellows-like diaphragm moves with the plug adjustment, eliminating potential leak paths and enhancing overall reliability.

Enhanced safety: The fire-safe design meets API 607, 7th edition standards, ensuring increased plant and personnel safety by preventing external leakage in case of fire.

Design Standards ASME B16.34 - Valve Design
API 599 – Valve Design
API 598 - Valve Leakage Test
Certifications API 607 - Fire-Safe Certification
ISO 10497 - Fire Testing
API 641, ISO 15848-1 2015 - Fugitive Emissions Certification
Quality ISO 9001