Ashcroft Pressure Gauges

Project Description: Hillsborough County intends to procure specific Ashcroft Pressure and Vacuum Gauges as they are the only known gauges with the following specifications and operational requirements.
Ashcroft Part Numbers:
1) 251009SWL02LXGV100, Assembled with 50310SS02TXCK
2) 251009SWL02LXGV160, Assembled with 50310SS02TXCK
3) 251009SWL02LXGV30IMV&60#, Assembled with 50310SS02TXCK
4) 251009SWL02LXGV60, Assembled with 50310SS02TXCK
251009SWL02LXGV100 Specifications:
• Dial Size: 2 1/2in. stainless steel
• System: Stainless steel tube/process connection (max. pressure 15,000 psi)
• Case Fill: Liquid filled (glycerine standard)
• Process Connection Size: 1/4 NPT male
• Process Connection Location: Lower
• Pressure Range (psi): 0 to 100
• Dampening: Silicone filling (add to glycerine filled gauge)
251009SWL02LXGV160 Specifications:
• Dial Size: 2 1/2in. stainless steel
• System: Stainless steel tube/process connection (max. pressure 15,000 psi)
• Case Fill: Liquid filled (glycerine standard)
• Process Connection Size: 1/4 NPT male
• Process Connection Location: Lower
• Pressure Range (psi): 0 to 160
• Dampening: {GV} Silicone filling (add to glycerine filled gauge)
251009SWL02LXGV30IMV&60# Specifications:
• Dial Size: 2 1/2in. stainless steel
• System: Stainless steel tube/process connection (max. pressure 15,000 psi)
• Case Fill: Liquid filled (glycerine standard)
• Process Connection Size: 1/4 NPT male
• Process Connection Location: Lower
• Pressure Range (psi): -30 to 60
• Dampening: Silicone filling (add to glycerine filled gauge)
251009SWL02LXGV60 Specifications:
• Dial Size: 2 1/2inc. stainless steel
• System: Stainless steel tube/process connection (max. Pressure 15,000 psi)
• Case Fill: Liquid filled (glycerine standard)
• Process Connection Size: 1/2 NPT
• Process Connection Location: Lower
• Pressure Range (psi): 0 to 60
• Dampening: Silicone filling (add to glycerine filled gauge)
50310SS02TXCK Specifications:
• Process Connection Size: 1/2 NPT female
• Diaphragm Material: Stainless steel
• Bottom Housing Material: Stainless steel
• Instrument Connection Size: 1/8 NPT female
• Fill Fluid: Silicon 50cST
Construction and Durability Requirements
• All stainless steel construction for gauge and diaphragm seal
• Corrosion resistant materials suitable for water and wastewater environments
• All welded diaphragm seal body to prevent leakage and enhance reliability
• Capable of withstanding harsh outdoor and plant conditions
• Compact, lightweight assembly for tight space installations
Performance and Accuracy Requirements
• Gauge with shock resistant movement designed to maintain accuracy under vibration
• Dampening capable of stabilizing readings in pulsating flow conditions
• Matched gauge and diaphragm seal assemblies calibrated together for optimal accuracy
• Suitable accuracy range for municipal water/wastewater pressure monitoring
Vibration and Pulsation Handling Requirements
• Gauge movement resistant to damage and drift from continuous vibration
• Built in dampening options that mitigate pulsation effects caused by pumps, ARVs, and lift station operations
• Ability to provide stable readings even under dynamic system conditions
Media Protection Requirements
• Diaphragm seal providing full isolation between the process media and gauge internals
• Resistant to corrosive liquids and chemical additives commonly found in wastewater
• Ability to prevent plugging from solids or debris
• Freeze resistant design to mitigate temperature related damage
• Zero leak path design to avoid product retention and ensure proper seal function
Environmental Compatibility Requirements
• Compatibility with wastewater, potable water, reclaimed water, and chemical feed systems
• Resistance to temperature variations typical of lift stations, ARVs, and treatment plant environments
• Suitable for indoor, outdoor, above grade, and below grade installations
Calibration Requirements
• Calibration performed by a qualified seal assembler
• Calibration certification included with each unit
• Post installation technical support available from manufacturer authorized personnel
Operational Capability Requirements
• Ability to continuously monitor pressure or vacuum at lift stations, air release valves, and treatment plant systems
• Instrumentation capable of detecting abnormal pressure conditions to prevent blow offs, SSOs, and equipment failures
• Support for both horizontal and vertical piping configurations
Public Health and Safety Requirements
• Instruments must support prevention of sanitary sewer overflows
• Must mitigate risk of catastrophic failures that can lead to environmental contamination
• Must provide reliable data necessary for regulatory compliance and safe operation of critical public infrastructure
Compatibility Requirements
• Full compatibility with existing municipal pressure monitoring programs and system pressure ranges
• Suitable for use with standard process connections used at lift stations, ARVs, and treatment plants
• Compatible with commonly used fill fluids for diaphragm seals in water/wastewater applications
This notice of intent is not a request for competitive proposals/bids.
Contractors who are able and interested in providing all the identified parts must submit clear and convincing information to support a challenge to the intended award. Challenges to this procurement must be received no later than the specified Close Date of this Special notice and must be submitted using the “submission” section in EUNA Procurement for this particular procurement. Absent any challenges, an award will likely be made after the Close Date.
The County will review properly submitted challenges (responses) to determine whether bona fide competition exists. Any such responses received by the deadline will be evaluated solely for the purpose of determining whether to conduct this procurement as a competitive solicitation.