| Trunnion Valve Balls | ||
| Size Range | 1/2" to 56" (Custom sizes available) | |
| Pressure Rating | PN10-PN420 (Class150-2500) | |
| Body Material | A105, A350 LF2, A182 F304, A182 F316, A182 F321, A182 F51, A182 F53, A182 F55, A182 F60, A182 F44, A564 630 (17-4PH) INCONEL625, INCONEL718, INCONEL825, Monel 400, Monel 500 etc |
|
| Core Process/Coating | ENP,HCR,STL6, STL12, STL20,Cr3C2, WC-Co, WC-Cr3C2-Ni, TiC-NiMo, SiC, CrC,ZrO2, Al2O3, Cr2O3, ZnO, TiO, Al2O3-TiO2,STL1, STL6, STL12,Ni60, Ni55, Ni45 etc. | |
| Operating Temperature Range | ≤1200°C | |
| Parameter Category | Core Technical Parameters | Standards for Determining Advanced Technological Level |
| Machining ball accuracy | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Processing ball Roundness | ≤ 0.025 mm | ≤ 0.011 mm (Micron-Level ) |
| Balls concentricity | ≤ 0.025 mm | ≤ 0.005 mm (Ultra-High Precision) |
| Other supplements | ≤ 0.4 μm | ≤ 0.1 μm (Mirror-Level) |
| Parameter Category | Core Technical Parameters | Criteria for High-End Technical Level |
| Coating Thickness Control | Thickness Uniformity | Thickness deviation at any spherical position ≤±8% (stricter than the general ±10% standard) |
| Thickness Tolerance Range | 100 - 300 μm (common range for wear-resistant layers); special ranges can be noted. No missed spraying for ultra-thin coatings (<10μm) | |
| Coating Adhesion Performance | Surface Hardness | HV 1300+ |
| Bond StrengthBond Strength | ≥80 MPa | |
| Interface PorosityInterface Porosity | <0.5% | |
| Coating Surface Quality | Surface Roughness (Ra) | ≤0.2 µm |
| Spraying Accuracy (Positioning & Coverage) | Spraying Positioning Accuracy | ±0.1mm |
Core Product: Trunnion Mounted Ball Valve Balls
Our products are the high-performance heart components built specifically for the Trunnion mounted ball valve architecture. Unlike floating ball designs, Trunnion mounted balls are precisely fixed and supported by upper and lower trunnions, transferring fluid pressure from the seats to the robust valve body and bearings, thereby achieving exceptional sealing and structural integrity.
Our Trunnion valve Balls are engineered to withstand extremely high pipeline pressures. Optimized internal design and precision-machined trunnions ensure even pressure distribution, effectively preventing ball shift and excessive seat wear. They are ideally suited for oil & gas transmission pipelines, refining, and large-scale industrial plants.
Full-Range Trunnion Ball Capability
We provide manufacturing services for Trunnion ball valve Balls across various sizes, pressure classes, and materials. Whether for standard specifications or custom models per API 6D, ASME B16.34, and other standards, we have the expertise to deliver.
Precision Machining & Coordinated Fit
The challenge in manufacturing a high-quality ball valve trunnion mounted ball lies in the absolute coaxiality between the ball and its trunnions, surface hardening, and the precise fit with the stem slot. Our expertise in valve ball machining is fully utilized here to ensure smooth, flexible rotation and stable torque values even under significant side loads.

Technical Focus: Precision Engineering of the Trunnion Structure
Integrated Trunnion Accuracy: Whether the ball and trunnions are monolithic or joined via high-strength methods, we guarantee exceptional coaxiality and perpendicularity-key to smooth valve actuation and even sealing.
Load Analysis & Optimization: Through engineering analysis, we optimize the wall thickness and trunnion dimensions of our Trunnion Balls to ensure sufficient strength and rigidity under full pressure differential, preventing deformation.
Surface Treatment Expertise: For trunnion contact surfaces, we apply specialized hardening or coating processes to significantly reduce the friction coefficient and enhance wear resistance, enabling decades of maintenance-free valve operation.

Why Choose Tong Ball for Your Trunnion Mounted Balls?
High-Pressure Specialists:
We understand the mechanics of high-pressure trunnion valves. Our Trunnion valve balls are reliable, engineering-proven solutions.
Systematic Manufacturing Perspective:
We don't just make a ball; we understand its role within the entire Trunnion mounted valve system, ensuring perfect synergy with bearings, seats, and stems.
End-to-End Control:
From forging and heat treatment to precision machining, final NDE (Non-Destructive Examination), and pressure testing, we maintain full-process control, ensuring every product meets the most stringent quality standards.
Does Your Project Require a Reliable Ball Core for High-Pressure Challenges?
If you are designing or maintaining critical pipeline systems and require high-performance Trunnion mounted valve balls, TongBall is your trusted technology and manufacturing partner. We offer a one-stop service from design support to finished product delivery.
Hot Tags: trunnion valve balls, China trunnion valve balls manufacturers, factory, Abrasion Resistant valve balls, 316L 3 way balls, control valve ball, Custom Valve Balls, Trunnion mounted valve balls, 316L control valve balls
