Special Modified Valves are engineered to meet customized industrial requirements in oil & gas, petrochemical, power generation, chemical, marine, aerospace, and specialized process industries where standard valves do not suffice. These valves are designed with enhanced features for high pressure, high temperature, corrosive environments, cryogenic conditions, and specialized applications.
Size: ½” up to 88” (DN 15 up to DN 2200)
Pressure Rating: ASME 150# to 4500#
Materials: Carbon Steel, Low Temperature Carbon Steel, Stainless Steel (SS 316, SS 304), Duplex Stainless Steel, Super Duplex Stainless Steel, Monel, Inconel, Hastelloy, Titanium, Nickel Alloys, Nickel Aluminum Bronze, Tantalum, Zirconium, Carbon Steel with Internal Corrosion Resistant Alloy (CRA) Overlay
Design Standard: API 600, API 602, API 6D, API 6A, ASME B16.34, MSS-SP, ISO, NACE MR0175
Pressure / Temperature Rating: ASME B16.34
Test (Inspection) Standard: API 598, API 6D, API 6A, ISO 5208, ISO 15848, BS 6364, MESC SPE 77/101, MESC SPE 77/102
Construction Details:
Bonnet Type: Bolted Bonnet, Pressure Seal Bonnet, Welded Bonnet, Extended Bonnet (for Cryogenic Service)
Sealing Mechanism: Metal-to-Metal Seat, Soft Seat, Triple Offset, Bellows Sealed
Special Coatings & Linings: PTFE, PFA, FEP, Tungsten Carbide, Stellite, Chromium Carbide
End Connection: Flanged (RF, FF, RTJ), Screwed (NPT, BSPT, BSPP), Socket Weld, Butt-Weld, Hub End, Clamp End
Operator / Actuator: Manual (Handwheel, Lever), Pneumatic Actuated, Hydraulic Actuated, Electro-Hydraulic Actuated, Electric Motorized
Types of Special Modified Valves:
High-Temperature Valves – Designed for extreme temperature conditions exceeding 800°C
High-Pressure Valves – Suitable for ultra-high-pressure applications up to 4500#
Cryogenic Valves – Extended bonnet design for -196°C and below
Corrosion-Resistant Valves – Special linings and coatings for aggressive media (acidic, alkaline, seawater)
Severe Service Valves – Engineered for erosive and high-velocity flow conditions
Bellows Sealed Valves – Zero-leakage design for hazardous and toxic media
Custom Trim Valves – Modified internals for optimized flow control and performance
Cryogenic Service:
Special Modified Valves can be manufactured for cryogenic service down to -196°C with extended bonnets, low-temperature materials, and specialized sealing technologies. Custom cryogenic tests verify performance in extreme conditions, ensuring low operating torque, leak-tight sealing, and compliance with industry standards.
