LULYLOK™ - Fluid Connection Fittings

Safe and Secure nut for the Various Fittings



LULYLOK™ is a technology created by JPB Système as part of its mission to provide innovative solutions to secure fluid and gas connections in the aviation industry.

LULYLOK™ can be adapted to many types of fittings to eliminate the use of safety wire or complex positive locking mechanism, reduce mantenance time and eliminate FOD potential.

LULYLOK™ is a B-nut for fittings including a self-locking device, which provides the benefit to prevent inadvertent loosening in harsh environments (vibration high temperature, corrosive agents, etc.).


How does it work



Overlook on the LULYLOK™ main features



  • LULYLOK™ - Introduction
    Adaptative
    LULYLOK™ can be adapted to many types of fittings to eliminate the use of safety wire or complex locking mechanism.
    Technology
    LULYLOK™ is a JPB-Système’s technology to provide innovative solutions to secure fluid and gas connections.
  • LULYLOK™ - Features
    No safety wire
    LULYLOK™ B-Nut does not need safety wire thereby eliminating FOD, reducing maintenance costs and installation time and the possibility of injury due to a sharp wire end after cutting.
    One-Sided Locking
    LULYLOK™ mates on all standard male fitting. It locks onto the geometry of the ferrule, which is customized for each customer's application.
    Loosening prevention
    With the spring leg feature, the LULYLOK™ generates a self-locking prevailing torque by acting on the ferrule (facets on the ferrule for example).
  • LULYLOK™ - Features
    Monobloc Design
    LULYLOK™ is a self-contained piece, which uses no deformed thread technology, no spring, and no complex assembly, which can generate FOD.
    Standard tooling
    LULYLOK™ has standard HEX sizes and utilizes a standard wrench to be mounted on tubing.
    Standard dimensions
    LULYLOK™ has the same overall dimensions as the standard AN818 and is adaptable to standard hardward and tube end configurations.
  • LULYLOK™ - Applications
    To any tubing
    LULYLOK™ can be assembled to any standard tubing, which includes a standard nipple.

    The overall weight are reduced and the overall dimensions are the same as a standard B-Nut (type AN818).
    Highly compatible
    The LULYLOK™ is fully compatible with all existing fittings, with either shoulder or thrust wire.

LULYLOK™ : Self Locking System Qualification



The LULYLOK™ B-Nut complies with the standard specification SAE AS85720

  • Proof Pressure
  • Burst Pressure
  • Thermal Shock - Temperature range of -65°F (18°C) to 275°F (135°C)
  • Impulse Test - 200,000 impulses pressures cycles minimum
  • Repeated Connection - 25 times minimum
  • Stress Corrosion (Salt Spray Testing) - per FED-STD-151 Method 811.1
  • Fire - 2000°F (1993°C), 4500 btu/hour flame for 15 minutes
  • Flexure Test - per ARP1185

Rotary Flexure test - LULYLOK™ & AN818 B-nuts comparaison



Test specifications

Rotary flexure test per ARP1185
Aero Fluid : MIL-H-5606-F @ 350 bars (5076 psi)
CRES 347 fitting (AMS5646)
Rotary speed : 1420 TPM
ØOD .375in (9.52 mm) / 3in (76.2 mm) length


AN818-06 Test

  • Seating torque :132.75 in.lb (15 N.m)
  • 47% of the minimum recommended seating torque (AS85720A)

Results:

  • No leakage in static.
  • Leakage from the outset of the test.
Without
JPB's technology

LULYLOK™-06 Test

  • Seating torque :88.5 in.lb (10 N.m)
  • 30% of the minimum recommended seating torque (AS85720A)

Results:

  • No leakage from the outset of the test.
  • No leakage after 11 hours of test.
JPB's technology

LULYLOK™ B-Nut Benefits

When tightened to the minimum recommended torque :

  • No leakage in static
  • No leakage during

When tightened to a value below the minimum recommended torque :

  • If no leakage in static, No leakage during operation.

LULYLOK™ : Data sheet



The LULYLOK™ Access to the data sheet of the product