Monel Globe Valves

Falcon High-Performance Monel (M35-1 / Alloy 400) Globe Valves

At Falcon, we design and manufacture industrial-grade Monel Globe Valves engineered specifically for precise flow regulation, throttling, and reliable shut-off in extreme process environments. Cast in high-purity ASTM A494 Grade M35-1 (Cast Monel 400) and trimmed with Monel K-500, our globe valves deliver superior resistance to severe corrosion, hydrofluoric acid (HF), and high-velocity marine fluids.

Key Features & Advantages

• Precision Flow Throttling: Optimized globe body cavity and parabolic plug design provide accurate flow control and minimal seat erosion during continuous throttling.

• Zero-Leakage Seating Integrity: Precision-ground and lapped Monel-to-Monel seating surfaces ensure tight shut-off conforming to API 598 and ISO 5208 Rate A.

• Anti-Galling Stem Design: Outside Screw & Yoke (OS&Y) layout with Monel K-500 stems eliminates thread galling and protects stem packing from corrosive media.

• Exceptional Acid & Seawater Immunity: Virtually immune to chloride stress-corrosion cracking, biofouling, and cavitation wear in marine and hydrofluoric acid units.

• Low Fugitive Emissions: Certified low-emission packing gland arrangements (API 622 / ISO 15848) prevent hazardous chemical leakage into the environment.

Technical Specifications & Manufacturing Range

Specification Feature	Falcon Standard Capability
Material Grades	Cast: ASTM A494 Gr. M35-1 / M35-2 / M30C Forged: ASTM B564 UNS N04400 / UNS N05500 (Monel K-500)
Design Standards	BS 1873, ASME B16.34, API 602 (Forged), DIN/EN
Nominal Sizes	1/2" to 16" (DN15 – DN400)
Pressure Ratings	ASME Class 150, 300, 600, 900, 1500 (PN10 – PN250)
End Connections	Flanged (RF, RTJ), Butt-Weld (BW), Socket-Weld (SW), Threaded (NPT)
Bonnet Options	Bolted Bonnet (BB), Pressure Seal Bonnet (PSB), Welded Bonnet (WB)
Testing Standards	API 598 Shell & Seat Testing, ISO 5208, EN 12266-1
Actuation Options	Handwheel, Bevel Gear, Electric Actuator, Pneumatic Actuator

Globe Valve Types Offered

• Standard OS&Y Bolted Bonnet Globe Valves: Ideal for general process lines, chemical transfer, and marine cooling systems.

• Y-Pattern (Oblique) Globe Valves: Designed with an angled body flow path to significantly reduce flow resistance and pressure drop during throttling.

• Angle Body Globe Valves: Combines 90-degree pipe direction change with throttling capability, reducing space and extra pipe fittings.

• Bellows Sealed Monel Globe Valves: Features a welded metallic bellows seal to provide absolute Zero-Fugitive-Emission containment for highly toxic or volatile chemicals.

• Cryogenic Extended Bonnet Globe Valves: Equipped with an extended bonnet column to protect gland packing from freezing in cryogenic gas processing (-196C).

Primary Applications

• HF Acid Alkylation: Specially trimmed for hydrofluoric acid service in petroleum refineries (conforming to UOP/Phillips standards).

• Marine & Subsea Engineering: Seawater cooling loops, ballast control, and desalination high-pressure pump isolation.

• Chemical Processing: Handling lines for chlorine, caustic soda, organic solvents, and reducing non-oxidizing acids.

• Power Generation: High-pressure boiler blowdown, feed-water isolation, and steam distribution lines.

Quality Assurance & Testing

Every Falcon Monel Globe Valve undergoes stringent factory testing prior to dispatch:

• Hydrostatic Shell & Seat Leak Testing (API 598)

• 100% Positive Material Identification (PMI)

• Radiographic (RT) and Dye-Penetrant (PT) Surface Testing

• Traceable EN 10204 Type 3.1 Material Test Reports (MTRs)

Contact Falcon for Your Valve Requirements

 

Whether you need standard Monel gate and globe valves or custom-engineered solutions for severe process environments, our technical experts are here to assist you. Contact Falcon today with your project specifications, pressure ratings, and dimensional requirements.