Description

Send Inquiry

Our high-pressure quick disconnect joint provides an instant, leak-free mechanical link between centralized lubrication pumps and distribution lines. It enables rapid tool-free coupling, preventing fluid spills and significantly reducing maintenance downtime.

Technical Specifications

Parameter	Specification Profile
Media Compatibility	NLGI Grade 0 to 3 Greases, Hydraulic & Lubricating Oils
Max Working Pressure	Up to 350 bar / 5,000 psi
Burst Safety Ratio	4:1 Minimum Structural Threshold
End Connection Threads	NPT, BSPP (G-Thread), Metric (M10x1, M12x1.5)
Temperature Range	-30°C to +100°C (-22°F to +212°F)
Housing Materials	Zinc-Nickel Plated Steel, Passivated Stainless Steel 316
Internal Valving	Hardened Carbon Steel / Stainless Steel Poppets
Seal Compound	Nitrile (NBR) or Viton (FKM) depending on media
Parameter	Specification Profile

Coupling Architecture & Variants

Single Shut-Off Couplings: Seals the supply side when disconnected while allowing the downstream line to vent or remain open.

Double Shut-Off Couplings: Automatically blocks fluid flow on both the male plug and female socket sides simultaneously upon separation.

Straight-Through Flow Lines: Unrestricted internal bore geometry designed for maximum grease delivery volume without pressure drop.

Panel-Mount Quick Disconnects: Threaded body sleeves engineered to pass through machine bulkheads for clean, external service access.

Key Features

Positive Locking Ball-Detent Mechanism: Features hardened internal stainless steel locking balls that secure the plug under aggressive mechanical shock.

Auto-Shutoff Valving: Integrated spring-loaded check valves instantly seal off both halves upon disconnection, preventing grease blowback or air entering the circuit.

Zero-Leakage High-Pressure Sealing: Precision-molded elastomer seals maintain structural integrity up to 350 bar under cyclic loading.

Material Grade Options

Zinc-Nickel Plated Steel: Provides exceptional corrosion resistance that surpasses standard zinc plating, protecting the sliding sleeve from rust locking.

Stainless Steel (AISI 316): Built entirely from corrosion-proof alloy for offshore marine equipment, chemical dosing racks, and harsh washdown zones.

Field Installation & Operating Guide

System Depressurization: Always relieve line pressure before attempting to couple or uncouple service lines to prevent sudden fluid spray.

Port Preparation: Clean the mating port threads and apply compatible liquid thread sealant to tapered pipe threads.

Socket Mounting: Thread the female socket securely into the distribution block using a properly sized open-end wrench on the hex flats.

Plug Insertion: Pull back the outer locking sleeve of the socket, push the male probe firmly until an audible click is heard, and release the sleeve.

Pull-Check Verification: Tug firmly on the joined line to ensure the internal locking ball-detent mechanism is fully engaged before pressurizing the system.

Target Industry Applications

Mobile Construction Fleets: Quick-detach lubrication lines on excavator booms and loader arms for fast component replacement.

Automotive Assembly Tooling: Multi-point robotic arm lubrication networks requiring frequent tool and line swaps.

Wind Power Maintenance: Nacelle service lines where rapid connection of auxiliary grease pumps is critical.

Heavy Press Lines: Modular stamping machine sections that undergo frequent die layout changes.

Quality & Manufacturing Standards

Burst Pressure Validation: Random sample testing conducted past 1,400 bar to verify the 4:1 safety margin.

Cycle Durability Testing: Pneumatic and hydraulic bench testing simulating thousands of connect/disconnect cycles without seal failure.

Quality System: Strict adherence to ISO 9001 process controls from raw bar stock turning to final assembly.

Frequently Asked Questions

Q: Will grease leak out when I disconnect the joint?

A: No. Models equipped with single or double shut-off valves feature internal spring-loaded poppets that snap shut instantly upon separation, containing the grease column inside the line.

Q: Can these quick disconnects handle high-pressure pump surges?

A: Yes. They are engineered for operational pressures up to 350 bar (5,000 psi), making them fully compatible with heavy-duty automated grease pumps.

Q: Do I need special tools to couple or uncouple the lines?

A: No tools are required. The spring-loaded sleeve allows technicians to connect and disconnect lines using only one hand, even in confined machinery spaces.

Q: What is the difference between single and double shut-off configurations?

A: Single shut-off blocks flow on the socket side when disconnected (leaving the plug side open), while double shut-off seals both halves simultaneously to keep air and debris out of the entire network.

Q: Are 3D CAD files available for my mechanical drawings?

A: Yes, downloadable STEP and IGES files are available in our resource portal to drop straight into your equipment CAD assemblies.

Q: What is the typical MOQ for custom body configurations?

A: Standard catalog items have very flexible MOQs for prototyping, whereas custom body dimensions or color rings require minimum production batch sizes.

Q: Do you provide testing samples for engineering evaluation?

A: Yes, we support qualified OEM buyers with product samples for lab testing and field trials upon request.

Q: How are the couplings protected from rust during ocean freight?

A: Every unit is treated with a light preservative film, capped with plastic dust plugs, and sealed inside heavy plastic before carton packing.

Q: What is the standard delivery timeline for stock orders?

A: Standard parts in stock typically dispatch within 3 to 5 business days, while custom production runs take approximately 20 to 30 days.

Hot Tags: quick disconnect joint, China quick disconnect joint manufacturers, suppliers, factory, Grease Fitting Joint, Lubrication Fittings Hydraulic Joint, Lubrication Fittings Quick Coupling, lubrication joint, Lubrication Pump Joint, Quick Disconnect Joint