Beverage process lines · hygienic isolation
A clear flow path does not show what remains behind the ball. Select the valve around the liquid, the cavity-cleaning arrangement and the connections you can actually maintain.
For beverage-line on/off assemblies. Alfa Laval SBV documents provide a named engineering reference; the Chinese supplier below offers its own designs, whose specifications need separate confirmation.
01
In the SBV reference design, a quarter-turn rotates the bored ball between two seats. The open bore gives a through-path; closure turns that bore across the line. The ball, seats and stem seals have different sealing duties. Alfa Laval describes this family as on/off equipment; a positioner alone does not establish its suitability for continuous throttling. [1]
| Configuration to discuss | What changes | What the quotation must resolve |
|---|---|---|
| Standard cavity | Product can occupy space behind the ball. A full-bore description concerns the flow opening. | Ask how the actual product is removed from that space during the validated cleaning cycle. High viscosity, sugar and protein content matter. [2] |
| Cavity fillers | Optional encapsulating seats reduce retained cavity volume. | Do not translate “reduced volume” into a claim of zero residue or proven cleanability. Obtain the selected seat geometry and cleaning instructions. [2] |
| Cavity-cleaning connections | A different SBV option provides connections for cleaning the cavity. | The SBV leaflet says this option cannot be combined with its cavity fillers. Identify which arrangement is actually quoted and how it joins the CIP circuit. [2] |
EHEDG explains that its equipment tests do not establish performance in every application: the food producer still has to develop a suitable cleaning regime for the process. No EHEDG certificate for the Deyi valve was verified in this review. [4]
02
This functional BOM follows the SBV exploded view and parts list, manual pp. 44–45. Position numbers identify that reference assembly only. They are not Deyi part numbers or a manufacturing drawing for an interchangeable valve. [3]
| Assembly item · SBV position | Role in the valve | Material and ordering boundary |
|---|---|---|
| Body and two end flanges · 1a/1b, 2 | Contain the ball and connect the removable centre to the pipework. | The SBV wetted-steel specification is 1.4404 (316L). Body variants and the connection drawing must match the selected cleaning option. [3] |
| Ball · 3 | Turns the bored passage between open and closed positions. | A wetted steel part in this reference. Surface condition and damage must be checked during service; a generic 316L label does not define its finished geometry. [3] |
| Two valve seats · 5a OR 5b | Contact the ball and provide the seat sealing interfaces. | PTFE in the SBV description. The drawing shows alternative seat forms: do not add both alternatives to obtain four seats. [3] |
| Body/seat O-rings · 6 and 7 | Seal the stationary interfaces around the seats and flanges. | The service kit lists two of each O-ring. Obtain the exact kit for the selected elastomer; “PTFE seat” does not identify every seal in the assembly. [3] |
| Stem and seal stack · 4, 9–14 | Transmit rotation while sealing the stem exit; support and spring elements load the packing. | The drawing includes three V-rings, a pressure ring and a spring. The manual specifies material groups, not an individual material against every item; request a part-level declaration where required. [3] |
| Coupling, bonnet and actuator · 17, 19, 20/21 | Connect the stem to the pneumatic drive and support the drive above the body. | Actuation versions are alternatives. The SBV specification separates other steel parts from wetted steel; do not label the complete actuator interface 316L without its BOM. [3] |
| Manual operating set · 22–25 | Provides the handle and its supporting hardware when manual operation is selected. | Order the manual version or the agreed actuator package. These are not automatically supplied together. [3] |
| Flange screws and option seals · 8, 26 | Secure the end flanges; the additional seals belong to cavity-cleaning connections. | The illustrated assembly lists eight flange screws and two option seals. Their applicability is drawing-specific, not a universal sanitary-valve bolt count. [3] |
Deyi publishes 304/316L steel choices on its non-retention page and labels the gasket “PTFE/SILICON”. That wording does not establish the exact elastomer grade or which seal uses it. Obtain the selected valve’s own wetted-parts and seal schedule. [7]
03
The SBV leaflet distinguishes an inch-tube DN/OD family from a DIN-tube DN family. These two examples have different connection geometry despite the shared number 25. Dimensions below are millimetres from the leaflet, not a universal equivalence between pipe standards. [2]
Deyi offers tri-clamp, tube-weld and extended tube-weld ends. Specify the required connection standard, mating dimensions, gasket and complete assembly rating; “one inch” or “tri-clamp” alone does not settle those details. [6]
For welded SBV flanges, the manual requires 30–40 mm of axial flange movement, depending on size, for maintenance. Review the pipe supports and removal sequence before freezing the skid layout. This requirement belongs to SBV; obtain the equivalent service envelope for the quoted valve. [3]
Compare columns side by side. On a narrow screen, scroll the table horizontally.
| SBV tube family | Outside Ø | Inside Ø | Wall |
|---|---|---|---|
| DN/OD 25 | 25 | 21.8 | 1.6 |
| DIN DN 25 | 29 | 26 | 1.5 |
04
Use the following as a specification review, not an operating envelope for every sanitary ball valve. A supplier must approve the combined conditions for the exact body, ends, seats, seals and actuator.
SBV manual 200007940-2-EN-GB, p. 37, gives 30-minute SIP entries of 140 °C for EPDM and 130 °C for PTFE. Page 38 separately states 150 °C for short-time sterilization without specifying its duration there. The leaflet follows the seal-specific table. Do not combine these entries into a 150 °C assembly rating; request written limits for all fitted seals and the complete cycle. [3] [2]
The three-piece page lists 1000/800/600 psi without mapping them to size, connection and temperature. It also mentions an 80–100 psi underwater air test. A test statement does not resolve the missing service-pressure mapping; require the complete valve’s rated configuration and test record. [6]
| Specification field | Evidence available | Decision still needed |
|---|---|---|
| Pressure · bar | SBV: 16 bar maximum product pressure; the manual separately recommends no more than 6 bar during activation. Its cleaning-pressure entry is 3 bar. [3] | State pressure during product transfer, switching and cleaning separately. Do not assume the static maximum applies to every action. |
| Temperature · °C and duration | The leaflet gives 0–95 °C medium-dependent operation. Its SIP table has seal-specific limits for a 30-minute exposure. [2] | Provide the actual product/CIP/SIP cycle. Resolve the conflicting sterilization entries described below before approval. |
| Wetted metal | SBV specifies 1.4404 (316L); Deyi’s non-retention page offers 304/316L without a part-level selection. [3] [7] | Request the chosen wetted-parts schedule and agreed material records. Do not copy the SBV grade into a Deyi order. |
| Seats and other seals | SBV has PTFE seats and separately specified elastomer seals. [1] | List the material and compound for each sealing position, with compatibility against product and cleaning chemicals. |
| Surface finish · Ra with unit | SBV lists internal Ra < 0.8 µm and a different external finish. Deyi offers Ra 40 or 25 microinch in its three-piece description. [3] [6] | Identify wetted surfaces, the selected finish and agreed measurement records. Deyi’s 40 µin is 1.016 µm; 25 µin is 0.635 µm (unit conversion), so both cannot be described as below 0.8 µm. |
| Flow capacity | Alfa Laval describes a full-bore on/off design, with the bore matched to its tube family. [1] | Obtain the selected size’s flow data for the actual liquid and allowable pressure loss. No verified numerical Kv/Cv table for the Deyi valve was found. |
| Operating torque and actuator | SBV actuator air supply is listed as 5.5–8 bar; this is separate from product pressure. [3] | Obtain valve torque through the duty cycle, actuator sizing, available air/electrical supply and failure position. |
| Closure leakage and test basis | SBV lists rate A under DIN EN 12266-1. ISO 5208:2015 concerns metallic-valve pressure-boundary and closure testing. [3] [5] | Name the contracted standard/edition, test medium, pressure, duration and acceptance result. Accept a leakage class or rate only together with the test that produced it. |
| Ends and installed mass | For SBV DIN DN 25, the leaflet lists 2 kg manual and 6.4 kg actuated. These are the named configurations, not a category weight range. [2] | Request a dimensioned assembly drawing and mass for the quoted configuration; a bare manual valve is not the complete automated installation. |
05
Treat cleaning as part of the intended process. For a sugary or viscous beverage, ask the supplier to show where residue can remain, how the selected cavity arrangement is flushed, and what proves the chosen cycle works. Alfa Laval cautions against allowing product to dry in the valve. [2]
SBV’s maintenance table gives its own preventive replacement intervals: 12 months for product-wetted seals and 24 months for stem seals. Those are reference-manual instructions, not a proven life expectancy for Deyi or every beverage duty. Obtain the quoted manufacturer’s service schedule and application conditions. [3]
06
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Product / beverage, viscosity and solids [ ] Valve duty: on/off; flow and permitted pressure loss [ ] Tube standard, outside diameter, wall and mating-end drawing [ ] Selected cavity arrangement and CIP connection / P&ID [ ] Product pressure / temperature; pressure during valve movement [ ] Cleaning chemicals, concentrations, pressure, temperature and dwell [ ] SIP cycle, duration and written limit for the complete seal set [ ] Wetted-part grades; seat and individual seal compounds; internal Ra and unit [ ] Manual or actuator; supply; fail position; feedback and control interface [ ] Assembly drawing, service clearance, installed mass and spare-part list [ ] Agreed pressure/closure tests, traceability and hygienic evidence [ ] Supplier to resolve pressure mapping, seal terminology and production-site identity [ ]
One existing supplier record is associated with this category. Its product descriptions support an enquiry, with the specification and identity questions below still open.
Publishes three-piece tri-clamp, weld-end and non-retention ball valves, with manual and actuator options. Cavity-filled seats are optional on the three-piece page. Obtain the exact pressure/size mapping and seal schedule. Its Wenzhou company description and incomplete HK contact address require clarification before treating the production site as verified.
Product scope checked 2026-10-10
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Not for the SBV options described in the reviewed leaflet: it explicitly excludes that combination. Ask the quoted manufacturer for its actual arrangement; do not assume options from separate product descriptions can be combined. [2]
The SBV source describes on/off service. Continuous modulation requires a model-specific selection with flow characteristics and duty approval. An actuator or positioner offered on a supplier page does not supply those missing data. [1] [6]
No. In the reference assembly, the metal specification, PTFE seats and elastomer seals are separate selections. Ask for the complete wetted-parts and seal schedule for the valve actually being supplied. [3]
No. The reviewed pages establish a published valve offering, not a verified hygienic certificate or a validated cleaning cycle. Request a certificate tied to the exact design if one is required, and validate the intended process separately. [6] [4]
No. Deyi’s About page describes Wenzhou DEYI, but its Contact page supplies only the incomplete address FLAT 01A, 10/F, HK. Request the legal seller, full production-site address and manufacturing responsibility for the quoted valve. [8] [9]
Sources checked 2026-10-10. Standards bodies and regulations define the requirements; manufacturer pages show published ranges for those models only. CNFX does not certify products or suppliers.
Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.
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