Double seal manual through ball valve is a type of valve with double sealing function, which is widely used in occasions where high sealing performance is required.
Here are the features and functions of this valve:
Double seal design: The valve adopts a double seal design, which can provide better sealing results. The two sealing rings act as seals at the same time, improving sealing performance and reducing the possibility of leakage.
Straight-through structure: The internal flow channel of the valve is a straight-through type, which can reduce the resistance of the medium during the circulation process and improve the circulation efficiency. This construction also makes the valve easy to clean and maintain.
Manual Operation: The valve is manually operated, with switch control through a handle or wrench. It is simple and convenient to operate, suitable for occasions where automatic control is not required.
High-quality materials: The valves are manufactured from high-quality materials, such as stainless steel and alloy steel, which have high strength and corrosion resistance, ensuring long-term stable use.
Wide range of applications: Duplex seal manual straight ball valves are suitable for various occasions, such as chemical, petroleum, pharmaceutical, and other fields. It is suitable for piping systems that require high sealing performance and high flow efficiency.
Customizable: According to customer needs, this valve can be customized for production. It can be manufactured according to different standards, specifications, and connection methods to meet the specific needs of customers.
A double-sealed manual pass-through ball valve is a valve with high sealing performance, manual operation and wide applicability. Its double-seal design and straight-through structure make this valve widely used in situations requiring high sealing performance and high flow efficiency.
| name | Double sealed manual pass-through ball valve |
| It is called the path | DN15-DN200mm |
| Nominal pressure | 1.6Mpa (If you need other pressure standards, please specify when ordering) |
| Connection | Quick assembly, clamps, quick cards, chucks |
| Body material | Carbon Steel (C) Stainless Steel 304 (P) Stainless Steel 316 (R) |
| Surface treatment | Mirror polishing inside and outside |
| Sealed material | Teflon (PTFE), EPDM, Silicone Rubber (VMQ), Butadiene Rubber (NBR), Fluorinated Rubber (FPM), Metal Seals (H), Carbide (Y) |
| Use the medium | Gas, liquid, oil, vacuum, water vapor |
| Medium temperature | -20℃-150℃(F) 、 -20℃-250℃ (PPL) 、-29℃-425℃(H)(Y) |
| apply | This type of ball valve series is a hygienic type of valve series for material transfer control. It is widely used in food and beverage processing, as well as in the pharmaceutical and chemical industries |
| standard | DIN standard series, 3A standard series SMS standard series, ISO/IDF standard series, BS/RJT standard series, ASME/BPE, etc. (There are various standard valve series that can be provided to customers) |
| The components of ball valves generally include: | A handle, a ball with a through cavity, valve body, valve core and shaft seal |
Remark:
The body of the sanitary straight-through quick-loading ball valve can adopt: casting or forging process;
The forms are divided into: floating, fixed, and top-mounted;
Sealing is divided into: soft seal and hard seal;
Withstand pressure up to: 2000 lbs, temperature resistance down to -196C up to 570.
Other special sealing materials or special temperatures can also be designed and selected according to customer requirements.
| Model representation method | ||||||||||||
| WH | -600 | —Q1 | —C1 | —F | —16 | —P | —25 | —D1 | —B | —W2 | —B2 | —L |
| >1. Weiheng brand | >2. Drive mode | >3. Valve body type | >4. Connection method | >5. Sealing material | >6. Nominal pressure | >7. Valve body material | >8. Nominal diameter | >9. Control mode | >10. Explosion-proof level | —20~150℃ | >12. Accessory options | >13. Three flows |
| 1~7 mandatory options, 8~13 optional | ||||||||||||
| 1 codename | 5 codename | Sealed material | 10 code | Explosion-proof rating | |
| WH | Weiheng brand | F | PTFE | B | ExdIl BT4 Gb explosionproof and explosion-proof type |
| PPL | Para-polyphenylene | BZ | ExdllCT5 Gb explosion-proof and explosion-proof type | ||
| 2 codename | Drive mode | H | Metal hard seal | BC | Exdll CT6 Gb explosionproof and explosion-proof type |
| 600 | Pneumatic actuator series | Y | cemented carbide | BM | ExmbllT4 Gb cast explosion-proof type |
| 900 | Electric actuator system | X1 | Ding Qing rubber NBR | BA | Exiall CT6Ga intrinsically safe and explosion-proof |
| 2001 | Column plastic actuator angle seat valve series | X2 | Natural rubber NR | ||
| 2002 | Stainless steel actuator angle seat valve series | X3 | EPDM | 11 codenames | Medium temperature |
| X4 | Viton rubber FPM | W1 | -20-80C | ||
| 3 codename | Body type | X5 | Food grade silicone rubber SI | W2 | -20-150C |
| Q1 | Two-way valve | F46 | Fully lined polyperfluoroethylene FEP | W3 | -20-250C |
| Q2 | Three-way valve | PFA | Fully lined with soluble PTFE PFA | W4 | -29-425C |
| Q3 | Four-way valve | F4 | Fully lined PTFE | W5 | -29-650C |
| Q4 | Stationary ball valve | N | nylon | W6 | -196-60C |
| Q5 | V-ball | TC | Lined ceramic | ...... | ...... |
| Q6 | Low profile ball valve | J | Rubber lining | It has a special temperature that can be designed and manufactured according to customer requirements | |
| Q7 | Sanitary grade ball valves | PEEK | Polyether ether ketone | ||
| Q8 | Plastic ball valves | W | When the ring | 12 codenames | Accessory selection |
| Q9 | High Vacuum Ball Valve | ...... | ...... | B1 | 2-position, 3-way solenoid valve |
| Q10 | Fluorine ball valve in the whole village | Other special sealing materials can be designed and manufactured according to customer requirements | B2 | 2-position 5-way solenoid valve | |
| Q11 | Cryogenic ball valves | B3 | 2-position 3-way explosion-proof solenoid valve | ||
| Q12 | Insulated ball valve | 6 codename | Nominal pressure | B4 | 2-position 5-way explosion-proof solenoid valve |
| Q13 | Eccentric hemispherical valve | ...... | ...... | B5 | Filter pressure reducing valve |
| Q14 | Tank bottom valve | B6 | Limit switch | ||
| Q15 | Ceramic ball valves | 7 codename | Body material | B7 | Explosion-proof limit switch |
| D1 | Centerline soft-sealed butterfly valve | Q | Ductile iron HT200 | B8 | Hand manipulation mechanism |
| D2 | 3. Eccentric butterfly valve | C | carbon steel | B9 | Locator |
| D3 | Sanitary Butterfly Valve | P | Stainless steel 304 | ...... | ...... |
| D4 | Plastic butterfly valve | R | Stainless steel 316 | ||
| D5 | Ventilation butterfly valve | PL | Stainless steel 304L | 13 codenames | Three flows |
| D6 | Fluorine butterfly valve in the whole village | RL | Stainless steel 316L | L | Tee L-type BC switching |
| D7 | High vacuum butterfly valve | U | PVC UPVC | T1 | Tee T-type C-port switch |
| D8 | Powder butterfly valve | PP | Reinforced polypropylene RPP | T2 | Tee T-type AB switching |
| Z1 | Gate valve | L | Aluminum alloy | T3 | Tee T-type AC switching |
| Z2 | Knife gate valve | ...... | ...... | T4 | Tee T-type B-port switch |
| J1 | Globe valve | Other special valve body materials can be designed and manufactured according to customer requirements | |||
| J2 | Bellows cut stop valve | ||||
| J3 | Angle seat valve | 8 codename | It is called the path | ||
| F1 | Upward expansion discharge valve | ...... | ...... | ||
| F2 | Downward discharge valve | ||||
| Other special valve body materials can be designed and manufactured according to customer requirements | 9 code | Control mode | |||
| Z | Standard switch type | ||||
| 4 codenames | Connection | T1 | Integral switching type | ||
| C1 | Female thread | T2 | Overall adjustment | ||
| C2 | By order | T3 | RS485 bus type | ||
| C3 | Male thread | D1 | Double acting | ||
| C4 | flange | D2 | Double-acting adjustment type | ||
| C5 | KF vacuum chuck | E1 | Uni-acting normally closed | ||
| C6 | weld | E2 | Single-acting normally closed regulation type | ||
| C7 | Pair clip | E3 | Single-acting and always open | ||
| C8 | Clamps | E4 | Single-acting normally open adjustment type | ||
Sanitary Double-Coupling Dual-Control Pass-Through Ball Valve
The sanitary double-coupling dual-control pass-through ball valve is a high-performance hygienic valve designed for applications where cleanliness, safety, and operational flexibility are critical. Constructed from SS304 or SS316L stainless steel, with a polished interior surface (Ra ≤ 0.8 μm), this valve ensures zero fluid retention, complete drainage, and contamination-free operation.
Its unique double-coupling design allows secure pass-through connections between pipelines, while dual-control operation supports both manual and automated actuation. The valve is ideal for food, beverage, dairy, pharmaceutical, biotechnology, and cosmetic production lines, providing reliable flow control while supporting CIP (Clean-in-Place) and SIP (Sterilization-in-Place) processes.
Valve Body: Forged SS304/SS316L stainless steel
Ball: Polished stainless steel with non-retention design
Seats and Seals: PTFE, TFM, or EPDM
Surface Finish: Ra ≤ 0.8 μm, meets FDA and 3A sanitary standards
Connection Type: Double-coupling pass-through
Actuation: Dual-control (manual lever and pneumatic/electric actuator)
Port Type: Full-bore for minimal pressure drop
Flow Configurations: T-type, L-type, or standard flow
| Parameter | Specification |
|---|---|
| Valve Type | Sanitary double-coupling dual-control pass-through ball valve |
| Size Range | 1/2" – 4" (DN15–DN100) |
| Pressure Rating | PN16–PN40 |
| Temperature Range | -20°C to 180°C |
| Cleaning Compatibility | CIP & SIP |
| Certifications | CE, ISO9001, FDA, 3A |
| Operation | Manual / Pneumatic / Electric |
Leak-free sealing under high pressure
Smooth ball rotation for precise flow control
Non-retention design eliminates dead zones, reducing microbial growth
Quick assembly and disassembly for maintenance

FDA: Certified for food and beverage contact
3A Sanitary Standards: Hygienic design suitable for dairy and biotech applications
CE Marking: Meets EU safety and quality regulations
ISO9001: Quality management and production standards
Full-bore design minimizes pressure loss, reducing pump energy consumption
Non-retention design reduces cleaning water and chemical usage during CIP/SIP cycles
Durable stainless steel construction minimizes replacement frequency, lowering material waste
Forged stainless steel is fully recyclable
Minimal maintenance and long service life reduce environmental footprint
Supports eco-friendly production goals in food, beverage, and pharmaceutical facilities
Verify valve size, material, and connection type
Ensure pipelines are depressurized, clean, and free from debris
Check actuator compatibility (manual, pneumatic, or electric)
Inspect gaskets and seals for integrity
Align valve with pipeline flow direction
Connect both couplings securely to pass-through lines
Insert sanitary gaskets as needed
Attach manual lever or actuator following manufacturer instructions
Conduct leak and function tests before operation
Store in clean, dry, temperature-controlled conditions before installation
Avoid impacts or surface scratches
Protect polished surfaces to maintain hygiene
Inspect gaskets, seals, and couplings weekly
Clean ball and seat surfaces during CIP/SIP cycles
Lubricate manual stem if required
Replace worn gaskets or seats promptly
Avoid exceeding pressure and temperature limits
Ensure proper alignment during reassembly to prevent wear
| Issue | Possible Cause | Solution |
|---|---|---|
| Leakage at coupling | Loose clamp or worn gasket | Retighten clamp or replace gasket |
| Difficult operation | Contamination or dry stem | Clean valve; lubricate stem |
| Flow restriction | Misaligned valve | Adjust ball or actuator alignment |
| Seat wear | High temperature or chemical exposure | Replace with compatible seat |
Flow and pressure compatibility guidance
Recommendations on seat and material selection
Advice on manual or automated control integration
On-site or remote guidance for valve installation
Assistance with actuator integration and alignment
Leak testing and operation verification support
Detailed technical manuals and documentation
Material certificates and inspection reports
Warranty and replacement support for manufacturing defects
Polished interior surfaces reduce microbial contamination
Non-retention ball ensures complete drainage
Manual and actuator control for flexible pipeline management
T-type, L-type, and standard configurations available
Forged SS304/SS316L stainless steel body
High corrosion resistance for long service life
Double-coupling design allows quick disassembly
Seats and gaskets easily replaced without special tools
Meets CE, ISO9001, FDA, and 3A sanitary standards
Supports CIP and SIP processes for safe, hygienic operation
| Customer | Industry | Feedback |
|---|---|---|
| BioPharma Ltd | Pharmaceutical | “Reliable dual-control operation and easy integration into our sterile lines.” |
| FreshDairy Co | Dairy | “Non-retention design ensures complete drainage, reducing cleaning time.” |
| JuicePure Inc | Beverage | “Durable, leak-free, and easy to maintain. Perfect for high-purity pipelines.” |
| CosmoCare | Cosmetics | “High-quality materials and smooth operation. Maintenance is quick and simple.” |
The sanitary double-coupling dual-control pass-through ball valve is a versatile, hygienic, and durable valve ideal for high-purity production systems. Its non-retention design and dual-control operation provide precise flow management, complete drainage, and flexible actuation options. Manufactured from forged stainless steel and polished to sanitary standards, it is suitable for food, beverage, dairy, pharmaceutical, biotechnology, and cosmetic applications. Compliance with CE, ISO9001, FDA, and 3A standards, combined with technical support, routine maintenance, and environmentally friendly operation, ensures safe, reliable, and sustainable pipeline performance in modern processing systems.
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