ELK28012 Butterfly Valve DN 125: The Complete Buyer's Guide for Worldwide Industrial Applications
Daftar Isiexpand_more
The ELK28012 Butterfly Valve DN 125 is a quarter-turn, wafer-pattern isolation valve sized to DN 125 (5-inch nominal bore) for on/off or throttling service in water, process, and hygienic flow lines. Buyers typically specify body material, seat elastomer, connection standard, and actuation (lever, gear, pneumatic, or electric) before purchase.
What is a DN 125 butterfly valve?
A DN 125 butterfly valve is a quarter-turn valve with a rotating disc mounted on a shaft inside a DN 125 (5-inch) bore, sealing against an elastomer or PTFE seat. It is compact, lightweight, and low-torque compared with a gate or ball valve of the same bore, making it the default choice for isolation and throttling in large-bore process lines.
In sanitary service, 3-A certified butterfly valves from VNE and DIXON use 304 or 316L stainless steel bodies and discs with clamp connections and surface finishes of 20RA ID / 32RA OD, meeting hygienic standards for food, dairy, beverage, and pharmaceutical processing.
How does a butterfly valve work?
The disc rotates 90° from fully open to fully closed. At 0° the disc is parallel to flow, presenting minimal resistance; at 90° it seats against the liner and blocks flow. A lever handle with multiple stop positions (12 on VNE models, unlimited on DIXON models) allows repeatable throttling positions.
Because the disc remains in the flow path even when open, butterfly valves produce some pressure drop. For DN 125 lines this is usually acceptable; where near-zero drop is required, a full-bore ball or gate valve is preferred.
ELK28012 Butterfly Valve DN 125 — key specifications
The table below summarises the measurable attributes buyers should confirm. Values reflect the VNE and DIXON 3-A sanitary butterfly valves stocked by 3G Electric; always verify against the specific datasheet for your ELK28012-equivalent part number.
| Attribute | Typical value (DN 125 class) | Notes |
|---|---|---|
| Nominal bore | DN 125 (5 in) | Confirm pipe schedule and OD |
| Body / disc material | 304 SS or 316L SS | 316L for corrosive or chloride service |
| Connection | Clamp (sanitary) or wafer/lug (industrial) | Match to mating flange or ferrule |
| Max pressure (CWP) | 140 psi (DIXON) / 145 psi (VNE) | Cold working pressure; derate with temperature |
| Surface finish | 20RA ID / 32RA OD | 3-A sanitary requirement |
| Handle stops | 12 positions (VNE) / unlimited (DIXON) | Affects throttling repeatability |
| Certification | 3-A sanitary | Food, dairy, beverage, pharma |
Types and applications
Butterfly valves fall into three broad families: sanitary (3-A, clamp-end, stainless), industrial wafer/lug (cast iron, ductile iron, or stainless, flanged), and high-performance (double-offset, metal-seated, for high temperature or pressure). The ELK28012 DN 125 class most commonly maps to the sanitary and industrial wafer families.
Typical applications worldwide include:
- Food, dairy, and beverage processing — CIP/SIP lines, product transfer, tank isolation
- Pharmaceutical and biotech — hygienic flow control, WFI and clean steam
- Water and wastewater — isolation and throttling on DN 125 mains
- HVAC and chilled water — large-bore isolation at plant rooms
- General process — chemical, pulp and paper, and power plant cooling circuits
How to select a DN 125 butterfly valve
- Confirm bore and connection. DN 125 (5 in) is the nominal size; verify whether your line uses a clamp ferrule, wafer between flanges, or lug body for dead-end service.
- Choose body and disc material. 304 SS suits general sanitary duty; 316L SS is preferred for chloride-bearing, acidic, or high-purity streams.
- Select the seat elastomer. EPDM for water and steam; FKM (Viton) for oils, fuels, and aggressive chemicals; PTFE for high-temperature or chemically inert service.
- Match pressure and temperature ratings. Confirm CWP (140–145 psi for the sanitary models shown) and derate for elevated temperature per the OEM datasheet.
- Decide actuation. Manual lever for infrequent operation; gear operator for high-torque DN 125; pneumatic or electric actuator for automated or remote control. Note that pneumatic actuators are typically rated for 24 VDC or 110/230 VAC control, with 50 Hz and 60 Hz variants for international supply.
- Verify certification and documentation. For hygienic service, insist on 3-A certification and material traceability. For export, request mill certificates and a declaration of conformity.
- Plan for maintenance. Confirm seat and liner availability, and whether the valve can be serviced in line without removing the body.
Product selection ladder — VNE and DIXON 3-A sanitary butterfly valves
The table below compares the 3-A certified butterfly valves stocked by 3G Electric. Use it as a ladder: start with the entry 304 SS model for general sanitary duty, step up to 316 SS for corrosion resistance, and choose the 316L DIXON model where the highest alloy purity and unlimited handle positioning are required.
| Model | Body / disc | Connection | Max pressure | Handle | Best for |
|---|---|---|---|---|---|
| VNE 3-A Certified 304 Stainless Steel Butterfly Valve | 304 SS | Clamp | 145 psi CWP | Lever, 12 stops | General food, dairy, beverage |
| VNE 3-A Certified 316 Stainless Steel Butterfly Valve | 316 SS | Clamp | 145 psi CWP | Lever, 12 stops | Corrosive or chloride-bearing product |
| DIXON 3-A Certified 316L Stainless Steel Butterfly Valve | 316L SS | Clamp | 140 psi CWP | Lever, unlimited stops | High-purity pharma, fine throttling |
Step up the ladder when the process fluid is corrosive (choose 316 or 316L), when fine throttling repeatability matters (choose the unlimited-stop DIXON handle), or when the highest alloy purity is required for pharmaceutical or biotech service. For standard potable water and dairy duty, the 304 SS VNE model is usually sufficient and cost-effective.
Why source from 3G Electric
3G Electric stocks 241+ products across 14 industrial departments — from machining and electrical to pumps, controls, and sanitary flow components — and we supply far more than is listed online. With 35+ years of experience, we interpret your demand, confirm the right specification, and deliver genuine industrial equipment worldwide.
We are a distributor and supplier, not an authorised dealer for any brand. That means we are accountable for getting you the right answer, not just the nearest part number. Our technical team supports sizing, material selection, actuation choice, and export documentation for international buyers.
For worldwide customers, we ship incoterms-neutral with full export documentation experience. Where voltage or frequency variants apply — for example 24 VDC, 110 VAC, or 230 VAC actuators at 50 Hz or 60 Hz — we confirm the correct variant for your market before order.
Frequently asked questions
What is the ELK28012 Butterfly Valve DN 125 used for?
The ELK28012 Butterfly Valve DN 125 is used for quarter-turn isolation and throttling in DN 125 (5-inch) process lines. Typical applications include food, dairy, beverage, pharmaceutical, water treatment, HVAC, and general industrial flow control where a compact, low-torque valve is preferred over a gate or ball valve.
How do I choose between 304 SS and 316L SS for a DN 125 butterfly valve?
Choose 304 SS for general sanitary and potable water duty where corrosion risk is low. Choose 316L SS for chloride-bearing, acidic, or high-purity streams such as pharmaceutical, biotech, and coastal water service. 316L offers better pitting resistance and is often required by hygienic specifications.
What is the pressure rating of a DN 125 sanitary butterfly valve?
Sanitary 3-A butterfly valves in the DN 125 class are typically rated to 140–145 psi CWP (cold working pressure). The DIXON 316L model is rated to 140 psi CWP; VNE 304 and 316 models are rated to 145 psi CWP. Always derate for elevated temperature per the OEM datasheet.
Can I get a DN 125 butterfly valve with pneumatic or electric actuation?
Yes. DN 125 butterfly valves can be supplied with lever handles, gear operators, pneumatic actuators, or electric actuators. Pneumatic and electric actuators are available in 24 VDC, 110 VAC, and 230 VAC control variants, with 50 Hz and 60 Hz options for international supply. Confirm the correct variant for your market before ordering.
What is the lead time and delivery for DN 125 butterfly valves to worldwide destinations?
Lead time depends on model, actuation, and destination. 3G Electric ships worldwide with full export documentation experience and incoterms-neutral supply. Contact us with your destination port and required incoterm to receive a firm lead time and quote in USD.
How do I size a butterfly valve for a DN 125 line?
Match the valve bore to the pipe nominal size (DN 125 / 5 in) and confirm the connection type — clamp ferrule for sanitary lines, wafer or lug for flanged industrial lines. Check the Cv value against your required flow and allowable pressure drop, and verify the seat elastomer is compatible with your process fluid.
Key takeaways
- The ELK28012 Butterfly Valve DN 125 is a DN 125 (5-inch) quarter-turn isolation valve for on/off or throttling service.
- Sanitary 3-A models from VNE and DIXON are rated to 140–145 psi CWP with 304 or 316L stainless bodies and 20RA ID / 32RA OD finishes.
- Select body material, seat elastomer, connection type, and actuation based on fluid, temperature, and duty cycle.
- 3G Electric stocks 241+ products across 14 industrial departments and supports worldwide export with full documentation.
- Contact 3G Electric for sizing assistance, quotes in USD, and technical support.
Ready to source your DN 125 butterfly valve? Contact 3G Electric for a quote, sizing assistance, and technical support. We interpret your demand, confirm the right specification, and deliver genuine industrial equipment worldwide.
![SPITZNAS 5 1217 0010 GLOBAL | Sourcing Guide [2026]](https://oxalncjenpflyqfncuhe.supabase.co/storage/v1/object/public/product-assets/grainger/0c7e6357-209c-4624-98c3-29a52c175ba9.jpg)
