Soft Seated Ball Valves
Engineered with advanced thermoplastic seats including Virgin PTFE, RPTFE, and PEEK to provide bubble-tight zero-leakage shut-off, low operating torque, and dependable long-term isolation across clean fluids, chemical processing, and hydrocarbon distribution.
Engineered for Bubble-Tight Sealing, High Purity & Low Operating Torque
ENGIPRO SOLUTIONS LLP soft-seated valves are designed to deliver exceptional sealing performance and reliable operation, making them an essential component in a wide range of industrial fluid control systems. Manufactured using advanced soft seat materials such as PTFE and other high-quality thermoplastics, these valves accurately conform to the valve ball or gate to provide a tight, leak-proof shut-off. This superior sealing capability minimises leakage, enhances system integrity, and ensures efficient performance even in demanding operating conditions.
Ideal for applications requiring high product purity, excellent corrosion resistance, and effective vibration absorption, soft-seated valves are widely used across industries including oil and gas, chemical processing, water treatment, pharmaceuticals, and food and beverage. Their low operating torque, smooth functionality, and robust construction make them suitable for both manual and automated actuation, while supporting a broad range of pressure and temperature conditions.
Available in versatile configurations and manufactured in compliance with international standards, soft-seated valves offer dependable performance, enhanced safety, and simplified maintenance for both critical and routine industrial processes. This series features ENGIPRO's carefully selected range of premium soft-seated valves, designed to meet diverse application requirements while ensuring optimal flow control, long service life, and maximum operational efficiency.
Special Features & Engineering Construction
Engineered to satisfy ASME B16.34, API 6D, and ISO 17292 requirements for severe industrial isolation.
Modular Body Construction
One Piece, Two Piece, and Three-Piece Construction types engineered for simplified plant installation, in-line inspection, and seal replacement.
Fire-Safe Design
Certified Fire-Safe construction complying with API 607 / API 6FA. Secondary metal backup lip provides shutoff integrity if soft seats burn out.
Anti-Blow Out Stem & DBB
Precision machined bottom-entry anti-blow out stem with anti-static grounding springs, plus Double Block and Bleed (DBB) capability.
Low Operating Torque
Self-lubricating fluoropolymer seats deliver low friction and minimal operating torque, extending cycle life and decreasing actuator load.
Low-Temp Lip Seals
Resilient spring-loaded lip seals engineered for low-temperature and refrigeration services, guaranteeing zero stem emissions across cycles.
Stem Extensions as Required
Custom length stem extensions and bonnet columns manufactured to project requirements for thermal insulation clearing and buried line access.
Actuator Pads to ISO 5211
Integral ISO 5211 direct mounting pad provides rigid, bolt-on alignment for pneumatic cylinder actuators, electric multi-turn motors, or limit switches.
Zero Leakage Sealing
Conforming polymer seats provide bubble-tight bi-directional isolation conforming strictly to API 6D and API 598 zero leakage testing standards.
Technical Details & Testing Specifications
Detailed manufacturing, dimensional, pressure testing, and flange standard matrix for ENGIPRO SOLUTIONS LLP Soft Seated Ball Valves.
Technical Details
ASME B16.34 • API 6D| Parameter | Manufacturing Specification |
|---|---|
| Special Features |
|
| Design Standards | ASME B16.34, API 6D, BS EN ISO 17292 |
| End Flanges | ASME B16.5 |
| Face to Face | ASME B16.10 |
| Testing Standard | API 598, API 6D |
| End Connections |
Raised Face Flange (ASME B16.5, EN 1092-1)
Ring Type Joint (ASME B16.5)
Butt Weld (ASME B16.25)
Socket Weld
|
| Size Range |
Floating type: DN 15 to DN 250 (1/2" to 10")
Trunnion mounted(TMBV): DN 25 to DN 600 (1" to 24")
|
| Pressure Rating |
Floating type: PN 10, PN 16, Class 150–2500
Trunnion mounted(TMBV): Class 150–1500
|
| Operations |
Manual: Bare-shaft, Lever & Gearbox
Automation: Electric, Pneumatic, Hydraulic Actuators
|
| Shutoff Rating | Zero Leakage for Soft Seated & Metal Seated per API 6D / STD. |
Material Type Specification
Recommended metallurgy for general services, chemical processing, and NACE MR0175 sour service.
| Type of Service | Valve Shell Material | Pressure Controlling Parts & Stem |
|---|---|---|
| General Service | Carbon or Low-Alloy Steel | Carbon or Low-Alloy Steel |
| General Service | Carbon or Low-Alloy Steel | Stainless Steel |
| General Service | Stainless Steel | Stainless Steel |
| Sour Service | Carbon or Low-Alloy Steel | Carbon or Low-Alloy Steel |
| Sour Service | Carbon or Low-Alloy Steel | Stainless Steel |
| Sour Service | Stainless Steel | Stainless Steel |
| Sour Service | CRA (Corrosion Resistant Alloy) | CRA (Corrosion Resistant Alloy) |
Target Industrial Environments
Widely specified across critical process industries requiring high product purity, bubble-tight shut-off, and corrosion-resistant isolation.
Chemical Processing
Acids, Solvents & ReagentsOil & Gas
Natural Gas & HydrocarbonsWater Treatment
Potable & Industrial EffluentPharmaceuticals
High Purity & Sterile FluidsFood & Beverage
Clean Utility & CIP ServicesGeneral Manufacturing
Compressed Air & UtilitiesRelated Valve Categories
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View SpecificationsNeed Soft Seated Valve Drawings or Material Certifications?
Our engineering team in Ahmedabad, Gujarat provides Certified Material Test Reports (MTRs to EN 10204 3.1), NACE MR0175 compliance packages, and customized pneumatic/electric actuator sizing calculations.