Onyx Valve
Onyx Valve Products at Siewert Equipment
Reliable Flow Control for Slurries, Wastewater & Corrosive Applications
Siewert Equipment is a distributor of Onyx Valve Company products in Upstate New York, offering a complete line of pinch valves, duckbill check valves, and expansion joints engineered for tough flow conditions.
With a reputation for durability, corrosion resistance, and zero-leakage performance, Onyx Valve products are ideal for controlling abrasive slurries, solids-laden liquids, and aggressive chemicals. Whether you operate a wastewater treatment plant, chemical facility, or industrial process system, Onyx valves provide a dependable and maintenance-friendly solution.
Why Choose Siewert Equipment for Onyx Valve Solutions?
- Application support for abrasive, corrosive, and high-solids systems
- OEM parts and regional inventory
- 24/7 service and installation support
- Custom sizing and engineered system recommendations
Industries Served by Onyx Valve
- Municipal Water & Wastewater
- Mining & Slurry Transport
- Pulp & Paper
- Chemical Processing
- Power Generation
- Food & Beverage
- Industrial Manufacturing
Onyx Valve Product Offerings
Pinch Valves (Manual, Pneumatic, Hydraulic, Electric)
- Ideal for slurry, sludge, and abrasive media
- Full-port design prevents clogging and reduces pressure loss
- Available in open-frame and enclosed-body designs
- Options for manual, air-operated, or motorized actuation
- Easy sleeve replacement without removing valve from the line
Duckbill Check Valves
- One-piece, elastomeric design prevents backflow and siphoning
- No mechanical parts—no maintenance
- Excellent for stormwater, sewer, and tidal applications
- Available in slip-on, flanged, and inline styles
- Self-cleaning, silent, and corrosion-proof
Expansion Joints
- Compensate for movement, vibration, and thermal expansion
- Used in pump stations, pipelines, and treatment facilities
- Wide range of elastomers for chemical compatibility
- Flanged or union-end styles available
- Reduce stress on piping systems and improve equipment life
Engineered to Perform in Harsh Environments
Founded in 1995, Onyx Valve Company is a U.S.-based manufacturer specializing in elastomeric valve technology. With decades of engineering experience and continuous innovation, Onyx has become a trusted partner in flow control—offering custom and standard valve solutions for the most demanding fluid handling systems.
Their patented and proven designs are built to extend valve life, minimize maintenance, and ensure reliability where metal valves fail—especially in slurry, corrosive, and high-solids applications.
Local Service, Sizing & Custom Valve Solutions
At Siewert Equipment, we offer more than just product delivery. Our experienced team helps you:
✔ Identify the right valve for your specific application
✔ Provide sizing and pressure-drop calculations
✔ Assist with installation, troubleshooting, and retrofits
✔ Supply OEM sleeves, replacement parts, and expansion joints
✔ Offer emergency repair and field service across NY
Your Local Onyx Valve Distributor in NY
Siewert Equipment is the authorized distributor of Onyx Valve Company products across Upstate New York, with offices in Rochester and Albany. From water treatment to industrial process control, we help facilities source, size, and service high-performance elastomeric valves.
- New York (serving all Upstate NY) through Siewert Equipment, with offices in Rochester, and Albany.
Ready to Improve Flow Control with Onyx Valves?
Contact Siewert Equipment today to learn how Onyx pinch valves, duckbill check valves, and expansion joints can improve reliability, reduce maintenance, and extend the life of your flow control systems.
FAQ: Onyx Valve Pinch and Duckbill Products
What are the main benefits of pinch valves over metal valves?
- Pinch valves eliminate clogging, resist abrasion, and isolate media from mechanical parts—making them ideal for slurries and solids-laden flows.
Do duckbill check valves require maintenance?
- No. They are maintenance-free with no moving parts, hinges, or seals to replace.
Can Onyx pinch valves be actuated automatically?
- Yes. Onyx offers pneumatic, hydraulic, and electric actuators for automated process control.
What sleeve materials are available?
- Sleeve options include natural rubber, EPDM, neoprene, nitrile, Viton®, and more, depending on chemical compatibility and temperature.
Are Onyx products NSF or potable water certified?
- Yes, specific models and materials can be certified for potable water—ask our team for compliance information.
What’s the typical life of a pinch valve sleeve?
- With proper sizing and use, sleeves can last years, even in harsh duty cycles. Siewert Equipment stocks replacements and can assist with fast turnaround.
Can Onyx valves handle vacuum conditions?
- Yes. Certain duckbill and pinch valve models are designed for vacuum service—please consult our engineers for the right configuration.
Are there flange and connection options?
- Onyx valves are available in ANSI flanged, threaded, union, or slip-on connections for easy system integration.
Can you retrofit an existing metal valve with an Onyx solution?
- Often yes. We offer drop-in replacement designs for existing piping systems to improve reliability and reduce downtime.
Do you provide CAD drawings or valve specs?
- Yes. Our team can supply technical data sheets, CAD files, and submittals for design and engineering purposes.
Trust Onyx Valve for Tough Applications and Zero-Leak Performance
Let Siewert Equipment help you select and support the right valve for your system. We bring local expertise and responsive service to every Onyx valve installation.
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