Bunney’s Inc. restores, maintains, and tests industrial valves for municipal utilities, commercial sites, and heavy industry across Arizona. Our technicians troubleshoot performance issues, execute precise repairs, and verify results with documented pressure testing—so your systems stay safe, efficient, and compliant.
New to Bunney’s? Learn who we are and explore our capabilities.
Why Choose Bunney’s Inc.
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Arizona-ready expertise: Experience with heat, mineral content, and dust that affect seals, seats, and actuators.
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Safety & compliance: Work practices aligned with our Safety program and applicable owner requirements.
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End-to-end service: Inspection, diagnostics, repair, calibration, and hydrostatic/pneumatic testing.
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Downtime reduction: On-site service when feasible and planned outages for larger scopes.
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Proven results: See similar scopes in our project portfolio
Valve Types We Service
Gate • Globe • Ball • Butterfly • Check • Plug • Knife gate • Diaphragm • Control valves (manual or actuated)
Materials and trims including carbon/stainless steel, bronze, and specialty elastomers (e.g., PTFE, EPDM, FKM) as specified.
Repair & Maintenance Services
Inspection & Diagnostics – External condition, actuation, seat integrity, and instrumentation checks.
Seat & Seal Restoration – Lapping/resurfacing or replacement of seats, seals, and gaskets to restore tight shut-off.
Stem & Packing Upgrades – Packing replacement, stem alignment, and guide/bushing repairs to reduce leakage and torque.
Actuator Service – Pneumatic/electric actuator repair, calibration, and travel/response verification (open/close setpoints).
Flange & Body Repairs – Fastener replacement, flange resurfacing, and corrective machining as applicable.
Coatings & Corrosion Mitigation – Protective coatings and materials suitable for local chemistry and temperature.
Hydrostatic & Pneumatic Testing – Seat and shell tests at defined pressures with results documented.
Planned Maintenance Programs – Periodic inspection, lubrication, packing adjustments, and critical-spare recommendations via facility maintenance services.
Integrating valve work with plant upgrades? Coordinate with our mechanical services team for piping tie-ins and outage planning.
Signs Your Valves Need Attention
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Hard to open/close, or slow/erratic actuator response
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Visible leakage at packing, flanges, or body
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Unstable pressures/flows or unexpected pressure drop
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Hissing, grinding, or vibration during operation
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Frequent re-torquing or control alarms trending upward
Testing & Documentation
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Pressure tests: Hydrostatic and pneumatic seat/shell testing to specified pressures
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Calibration: Actuator travel, end stops, and position feedback verification
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Records: Test charts/results, parts replaced, torque settings, and recommendations for future service
Arizona-Specific Considerations
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Heat & UV: Elevated temps accelerate elastomer aging—use heat-rated seals and scheduled packing checks.
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Water quality: Mineral/hard-water scaling impacts seats and trims—plan cleaning and compatible materials.
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Dust & ingress: Desert particulates increase wear—inspect breathers, positioners, and enclosures routinely.
Industries We Support
Water & wastewater • Power generation • Manufacturing • Food & beverage • Mining & aggregates • Chemical & process • Commercial facilities
Our Process
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Walkthrough & Data Review – Service history, setpoints, and process conditions
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Inspection & Diagnostics – External/internal assessment, functional checks
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Repair Plan – Parts, labor, and outage/lockout coordination
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Execution – Repair, calibration, and testing
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Closeout – Test documentation, recommended spares, and maintenance cadence
