Hastelloy C276 Check Valves

Falcon High-Performance Hastelloy C-276 (UNS N10276 / CW12MW) Check Valves

At Falcon, we engineer and manufacture industrial-grade Hastelloy C-276 Check Valves designed to deliver automatic, rapid-closing backflow prevention in the most severe, highly corrosive chemical process environments. Cast in high-purity ASTM A494 Grade CW12MW (Cast Hastelloy C-276) and forged from ASTM B574 UNS N10276, our non-return check valves protect pumps, compressors, and sensitive chemical equipment from severe pressure surges, reverse flow, and water hammer.

Key Features & Advantages

• Unmatched Severe Chemical Resistance: High nickel, molybdenum, and chromium matrix with tungsten provides complete immunity to wet chlorine gas, hypochlorites, chlorine dioxide, ferric/cupric chlorides, and hot contaminated mineral acids.

• Rapid Non-Slam Backflow Protection: Precision-balanced discs and optimized internal flow passages ensure immediate reaction to reverse flow, preventing destructive hydraulic shock and equipment damage.

• Superior Pitting & Crevice Corrosion Immunity: High tungsten and molybdenum content delivers outstanding protection against localized pitting and stress-corrosion cracking in high-chloride, acidic environments.

• Anti-Galling Internal Hardware: Hastelloy C-276 hinge pins, shafts, and springs ensure smooth disc pivoting without binding or galling over long operational cycles.

• Zero-Leakage Seating Options: Micro-finished, lapped Hastelloy-to-Hastelloy seating surfaces deliver tight shut-off conforming to API 598 and ISO 5208 Rate A / B.

Technical Specifications & Manufacturing Range

Specification Feature	Falcon Standard Capability
Material Grades	Cast: ASTM A494 Gr. CW12MW / CX2MW / CW6M Forged: ASTM B574 / B564 UNS N10276 (Hastelloy C-276)
Design Standards	API 6D, BS 1868, API 594, API 602 (Forged), ASME B16.34
Nominal Sizes	1/2" to 24" (DN15 – DN600)
Pressure Ratings	ASME Class 150, 300, 600, 900, 1500, 2500 (PN10 – PN420)
End Connections	Flanged (RF, RTJ), Butt-Weld (BW), Wafer, Lug, Socket-Weld (SW), Threaded (NPT)
Cover / Bonnet Types	Bolted Cover (BC), Pressure Seal Cover (PSC), Welded Cover (WC)
Check Valve Patterns	Swing, Piston / Lift, Dual-Plate Wafer, Tilting Disc, Ball
Testing Standards	API 598 Shell & Seat Testing, ISO 5208, EN 12266-1, FCI 70-2
Operating Temp. Range	-196C to +538C (Cryogenic to High-Temp Service)

Check Valve Configurations Offered

• Swing Check Valves:

  • Top-hinged disc design swinging fully open under forward pressure. Delivers full-bore flow capability with minimal pressure drop across horizontal and vertical-up lines.

• Piston / Lift Check Valves:

  • Utilizes line pressure to lift a guided piston disc off the seat. Ideal for high-pressure, high-velocity gas and liquid streams requiring ultra-fast backflow closure.

• Dual-Plate (Wafer) Check Valves:

  • Compact, lightweight wafer design equipped with twin spring-loaded plates for non-slam, rapid closure in tight piping footprints.

• Tilting Disc Check Valves:

  • Designed with a pivoted disc that closes before reverse flow velocity drops to zero, dramatically reducing fluid hammer in high-flow pump discharge lines.

• Ball Check Valves:

• Compact, small-bore (1/2" to 2") high-pressure designs using a Hastelloy ball guide system for chemical feed and sampling lines.

Contact Falcon for Your Valve Requirements

Whether you need standard Hastelloy C-276 check valves or custom non-slam backflow preventers for severe process applications, our engineering specialists are ready to assist you. Contact Falcon today with your project specifications, pressure ratings, and pipe dimensions. Our technical team will promptly review your RFQ and provide a competitive quote along with full engineering support. Email us directly or submit your inquiry through our online form to get started.