Pig Trap Closure Interlock

Product Model: H-PCiL

ENEX i-LOCK Series H-PCiL is the heavy industry Pig Trap Closure Mechanical Trapped Key Safety Interlock product range and is suitable for all Pig Trap Closure product designs. The H-PCiL ‘Patented’ lock portions and keys allow for either dual or single trapped key sequential or standalone operational procedures.

The basic principle of this safety equipment is to lock the Pig Trap Closure closed and (where applicable) eliminate access to the Closure pressure warning bleed screw until complete draining and venting has been completed successfully. For dual key system requirements, only if both rotary keys are inserted and rotated 90°, will the internal locking mechanism be released allowing the H-PCiL Actuator to be dis-engaged. For single key system, inserting and rotating the individual key, will release the internal locking mechanism allowing the H-PCiL Actuator to be dis-engaged.

Each lock portion and rotary key is uniquely coded to allow a truly safe operating sequence procedure. Once the H-PCiL Actuator has been removed, the initially inserted key will be trapped until the Pig Trap Closure is closed and the H-PCiL Actuator is re-engaged.

H-PCiL product range can be supplied with on/off switches and proximity limit sensors to confirm :

  • Key entry rotation and Key removal rotation
  • Actuator engagement & dis-engagement

  • Pig Trap Loading / Unloading Systems

  • Chemical
  • Marine
  • Mining
  • Mineral & Cement
  • Oil & Gas
  • Petrochemical
  • Power Generation
  • Pulp & Paper
  • Refining
  • Water & Utilities

  • SHELL DEP Specification
  • EQUINOR TR2315 Final Ver 5.02
  • ISO/TS 19837:2018 - Technical Specification
  • ISO 14119:2013 (formally EN1088)
  • Salt Mist Test (Lloyds Test Spec No 1)
  • Fire Test (API 607 & ISO 10497:2010)
  • High Temp Test 70c (EN 60068-2-2:2007)
  • High Humidity Test (EN 60068-2-2:2007)
  • Static and Dynamic Inclination (IEC 60092-504:2001)
  • Ultra Low Temp -57c (EN 60068-2-1:2007)
  • Vibration Test (EN 60068-2-6:2008)
  • Ingress Protection Test (EN 60529:1992 Amd 1&2)
  • Directive 2006/42/EC

  • UK Designed, Engineered, Manufactured, Assembled & Tested Products
  • Minimum 3 billion - billion! ‘unique’ Rotary Key Code permutations from the ‘Patented’ Lock Portion & Key Design. We stopped counting at 3 billion !
  • Ultimate Safe and Secure Mechanical Interlock Design.
  • Defeat, override & tamperproof compliant
  • Solid and robust construction with no cast parts
  • Materials of construction : Stainless Steel
  • Unique ‘Patented’ Lock Portion & Key Design.
  • Lock Portion and Key Design have been tested to over 200’000 cycles
  • Lock Portion and Keys include ‘over torque’ protection mechanism as standard
  • Tamper proof and copy proof body housing, lock portions and keys
  • Unique ENEX i-LOCK tamper proof securing bolts
  • Unique on the ‘Patented’ key is that the code and drive members function independently
  • One single Master Key covers site installed Key Code permutations
  • Ultimate product design for normal, harsh and corrosive environments
  • Spring loaded Lock Portion Ingress Protection & Weather Seals Dust Caps
  • Can be installed to host equipment under live process conditions
  • No interference or intrusion with of the host equipment pressure envelope
  • Anchor & Adaptor units designed and manufactured to suit the host equipment
  • Product serial number traceability on every unit
  • Secure mechanical fixing of all labels and tags
  • Full colour coded key & dust cap tagging option for enhanced error elimination
  • Pad lockable dust covers are an option for lockout hasp and scissor hasps operation

ItemPart DescriptionMaterial
1BodyStainless Steel AISI 316L
2Lock portion & ingress protection capsStainless Steel AISI 316L
3Internal Locking MechanismStainless Steel AISI 316L
4Actuator (bespoke design to suit host equipment)Stainless Steel AISI 316L
5Body Securing Bolts & FastenersStainless Steel A2 Class 70
6Operating KeyStainless Steel AISI 316L
7Name Plate, Lock Portion and Key TagsTroPly

(Dimensions show standard actuator. Dimensions will differ for different actuator design layouts)

Model No.Height

(Note : dimensions are excluding anchor, adaptor and actuator)

1. 2.3.4. 5. 6.
HHeavy Industry
PCPig Trap Closure
Standard if un-coded
Son/off switch
S(Ex)Ex rated on/off switch
LLimit sensor
L(Ex)Ex rated limit sensor
SSingle Lock portion
DDual Lock portion
 Standard if un-coded
XSpecial Build