Design Change Notifications

MicroBulk

• 2025 Oct- Model Change for Economizer (DCN-149) 2024 Mar- Vendor Change for Cyl-Tel (DCN-147)
• 2019 Apr - Upgraded PB Return Components on Perma-Cyl^® VHPs (DCN-122)
• 2019-Feb – PC 1000 and 2200 models now standard with lab base (DCN-121)
• 2019-Jan – End of Life for Chart’s OnSite Telemetry System (DCN-118)
• 2019-Jan – PC 5500 MP and VHP Gen 3 Design Changes (DCN-117)
• 2018-Jul – Perma-Cyl^®  Pressure Build Regulator Model Change (DCN-114)
• 2017-Apr - Perma-Cyl^® MicroBulk Storage System FlexFill Piping Option Model Manifold Change (DCN-108)
• 2016-Dec - Perma-Cyl^® MicroBulk Storage System Fill Circuit Changes (DCN-107)
• 2016-Dec - Perma-Cyl^® MicroBulk Storage System Regulator Manufacturer Change (DCN-106)
• 2016-Sep - Perma-Cyl^® MicroBulk Storage System models flexible phase lines (DCN-105)
• 2016-Sep - Perma-Cyl^® MicroBulk Storage System models changing to Habonim ball valves (DCN-104)
• 2016-Jun - Perma-Cyl^® MicroBulk Storage System models have eliminated the rubber stoppers on the pallet bases (DCN-102)
• 2016-Jan - Perma-Cyl^® MicroBulk Storage System models to obsolete and new lab base specs (DCN-100)

Nitrogen Dosing

• 2017-Mar - Siemens S7200 Controller Replacement (DCN-109)

Packaged Gases

• 2022-Jul -Dura/Euro-Cyl liquid cylinder liquid level gauge change (DCN 144)
• 2021-Nov - Dura-Cyl 120LP Base Design Change (DCN 140)
• 2018-Apr -Dura-Cyl 230LP DOT Service Pressure Change (DCN 134)
• 2020-Jan - LP Cylinder Models, Addition of LP PB Regulator Kit as Standard (DCN 125)
• 2019-Oct - Obsolescence of MP, HP and VHP MCR Style LC Models (DCN-124)
• 2018-Apr - Dura-Cyl^® Inner Vessel Change (DCN-113)
• 2017-Aug - Cryo-Cyl^®, Dura-Cyl^®, Laser-Cyl^® and Mega-Cyl^® Liquid Cylinder Regulator Plumbing Configuration Change (DCN-111)
• 2016-Jun - Dura-Cyl^®, Laser-Cyl^®, and Mega-Cyl^® Liquid Cylinder Regulator Change (DCN-103)
• 2016-Jun - VGL^™ to Econo-Cyl^™ Liquid Cylinder Model Transition (DCN-101)

High Pressure

• 2025-July - PLC Change from Mitsubishi to Crouzet (DCN-148)
• 2019-Dec - Addition of an analog cycle counter to the control panel (DCN-135)
• 2019-Feb - New and Obsolete Trifecta Models (DCN-120)
• 2019-Jan - Air Actuated Ball Valve to Magnatrol Valve Change (DCN-116)
• 2017-Nov - Revised Design of Trifecta 600 PSIG Systems (DCN-112)
• 2017-Jul - Transmitter Change on Trifecta^® Gas Supply System (DCN-110)

Bulk CO₂

• 2019-Jan – Changed Beverage Tank Mounting Hole Diameter (DCN-119)

Bulk Storage

• 2023-Sept - Primary Valve Changes for the Chart -01 Series Atmospheric Bulk Tanks (DCN-146)
• 2020-Aug - Cash FRM-2 Replacement with Generant back pressure regulator (DCN-128)
• 2020-May - Perma-Cyl models being obsoleted (DCN-127)