Overview
The OEM Leak-Proof Umbrella Check Valve for Condiment Valves is a food-grade, one-way sealing component engineered to deliver reliable, drip-free dispensing of viscous food products — ketchup, mustard, mayonnaise, dressings and similar sauces. Manufactured from premium food-grade silicone or LSR formulations and produced on automated molding lines, these umbrella valves combine optimized membrane geometry, precision tooling, and validated materials to prevent backflow, minimize after-drip, resist staining, and maintain long service life in both consumer and food-service dispensers. Full OEM support includes DFM, rapid prototyping, tooling, pilot validation, production molding, secondary assembly (overmolding / inserts), and customized packaging.

Basic Information
| Attribute | Details |
|---|---|
| Place of Origin | Xiamen, China |
| Brand Name | OEM |
| Material | Food-grade Silicone (VMQ) or Liquid Silicone Rubber (LSR) — FDA / LFGB options |
| Manufacturing Method | Automated LSR injection molding (two-component metering, hot-runner) or compression molding for select geometries |
| Typical Hardness | Shore A 10–40 (tuned to product viscosity & response) |
| Size | Fully customizable — ID/OD, valve height, skirt/lip geometry per drawing |
| Temperature Range | –40 °C to +200 °C (compound dependent) |
| Tensile / Elongation | Tensile ≥ 7 MPa; Elongation ≥ 300% (compound dependent) |
| Chemical Resistance | Resistant to acids, oils, salts, and common cleaning agents used in food service |
| Typical Performance | Bench-verified drip control and back-pressure sealing per customer specification (typical functional test to 50 kPa back-pressure) |
| Cycle Life | >100k actuations typical; higher cycle life available with optimized compound & design |
| Packaging | OPP bag, vacuum tray, blister pack, taped reels, or custom retail packaging |
| Marking / ID | Mold embossing, laser marking or pad print where applicable |
| OEM Services | DFM, mold design, rapid prototyping, pilot runs, overmolding, assembly, testing & packaging |
| MOQ | Small pilot orders accepted; scalable to mass production |
| Samples | Prototypes and production samples available upon request |
| Typical Applications | Squeeze bottles, pump nozzles, tabletop dispensers, single-serve applicators, beverage nozzles |
Key Benefits
- True Leak-Proof One-Way Sealing — engineered umbrella geometry and tight seat tolerances prevent backflow and minimize after-drip.
- Optimized for Viscous Media — valve profiles and shore selections are tuned for ketchup-style viscosities to ensure consistent dosing and flow.
- Food-Safe & Low-Migration — FDA/LFGB compliant compounds and validated material control to avoid taste/odor transfer and meet regulatory needs.
- Fast Elastic Recovery — low-hysteresis LSR formulations return quickly for repeatable dispenses.
- Easy Integration — molded flanges, snap ribs, or overmolded thermoplastic mounting features for secure installation without extra fasteners.
- Scalable Clean Production — automated injection/trim and cleanroom assembly lines reduce contamination risk and ensure consistent quality from prototype to high volume.
Production & Process Highlights
- Tooling & Moldmaking — in-house CAD/CAM mold design with 5-axis CNC machining, sinker/wire EDM for complex undercuts, and precision grinding to ensure cavity tolerances required for leak-proof sealing.
- Material Control — lot-coded food-grade LSR/VMQ compounds with incoming QC (FTIR/IR checks, certificate verification) and batch traceability.
- Automated Molding — two-component metering LSR injection systems and precision compression presses deliver consistent shot weights, minimal flash, and repeatable mechanical properties.
- Post-Cure & Conditioning — controlled thermal post-cure ovens to finalize crosslinking, followed by conditioning to stabilize dimensional and mechanical behavior.
- Secondary Operations — automated trimming (ultrasonic/laser), optional overmolding of thermoplastic flanges (2K), and robotic assembly into nozzle housings where required.
- Functional Testing — automated leak/back-pressure rigs (bubble test, backflow, burst), viscous-media flow tests using ketchup simulants, cycle-life endurance rigs, and vision inspection for flash/defects.
- Cleaning & Packaging — ultrasonic cleaning (if required), controlled packing in hygienic zones, and customer-specified labeling and documentation.
Quality Assurance
Our QA program for umbrella check valves is built on ISO 9001 procedures and food-contact controls. Incoming raw materials are verified against certificates; process controls monitor shot weight, mold temperature, and metering parameters in closed-loop systems. Production involves 100% visual or machine vision inspection for molding defects, sampled dimensional verification with CMM, durometer hardness verification, and representative mechanical testing (tensile, elongation, compression-set). Functional validation includes back-pressure leak testing, drip/flow verification with viscous simulants, thermal cycling, and migration/extractables screening for food applications. We supply material declarations, test reports, and full lot traceability on request.
Why Partner With Us?
- Food-Grade Elastomer Expertise — deep experience selecting and validating LSR/VMQ compounds for condiment and food-service environments.
- End-to-End OEM Capability — from DFM and in-house tooling to pilot validation, high-volume molding, assembly and global logistics.
- Application-Driven Design — we tune valve geometry, shore, and seat dimensions to meet specific viscosity, flow-rate and anti-drip targets.
- Robust Functional Testing — bespoke test rigs for back-pressure, burst, drip and cycle-life performance using real or simulated condiments.
- Small-Batch to Mass Production — flexible MOQ policy and automated production cells to scale quickly without sacrificing quality.
- Regulatory & Documentation Support — FDA/LFGB materials, migration/extractables data, and full traceability reports to support food-industry supply chains.
Factory Show
Our production facility is configured for contaminant-controlled elastomer manufacture and precision tooling. Key assets include 5-axis CNC machining centers, mirror and sinker EDM, precision grinding, automated LSR injection cells with hot-runner tooling, compression presses, thermal post-cure ovens, ultrasonic/laser trim systems, and robotic handling to minimize human contact. Inspection equipment includes ZEISS CMMs, automated vision lines, durometers, tensile testers, and dedicated leak/cycle test rigs tuned for viscous-media simulation. Cleanroom assembly areas, ultrasonic cleaning stations, and controlled packaging zones ensure hygienic handling for food-contact products. Managed under ISO 9001 workflows, our engineering and QA teams provide rapid iteration from prototype to certified, scalable production.