Product Name
Manual 3-Way Ball Valve – 316 Stainless Steel, L/T Port, 1000 WOG
Product Summary
A manual 3-way ball valve in 316 stainless steel (CF8M body), rated 1000 WOG, sizes 1/4″ to 2″. Choose a T-port ball to mix two lines or run straight through, or an L-port ball to divert flow 90° between two outlets — both in stock. PT threads in stock; NPT and PF made to order. PTFE seats, -20 °C to +180 °C, and an ISO-style mounting pad so the same valve can be automated later.
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ISO 9001 · CE · Manufacturer since 1999
Product Description
This manual 3 way ball valve in 316 stainless steel eliminates complex piping manifolds: divert flow or mix fluids with a single 3T/3L Series valve instead of multiple 2-way valves and tee fittings. PT threaded, rated 1000 WOG, with PTFE seats — and an ISO-style mounting pad, so the same valve can take a pneumatic or electric actuator later.
Need automation now? See our pneumatic 3-way ball valve. For food and biotech lines, see the sanitary manual 3-way ball valve.
T-Port vs L-Port — Which One Do You Need?
L-Port (Diverter): directs flow from the bottom port to either the left or right port (or OFF). Ideal for switching between two tanks, two pumps or two supply lines — one valve does the changeover.
T-Port (Mixer/Diverter): can connect all three ports simultaneously (mixing two lines into one), or direct flow straight through or at 90 degrees. Ideal for blending duty and bypass loops around strainers, meters or heat exchangers.
Both port types are in stock. For a full walkthrough with flow-path diagrams for every handle position, see our L-port vs T-port guide.
Key Technical Specifications
| Model | 3T (T-port) / 3L (L-port) — both in stock |
| Size range | 1/4″ – 2″ |
| Body, caps & ball | ASTM A351 CF8M — the cast form of 316 stainless steel — in stock; CF8 (cast 304) made to order |
| Stem | SS316 |
| Seats & seals | PTFE |
| Pressure rating | 1000 WOG |
| Working temperature | -20 °C to +180 °C |
| End connection | PT (tapered) threaded — in stock; NPT and PF made to order |
| Top mounting | ISO-style pad (actuator-ready, see dimension table) |
| Operation | Manual lever handle with position stopper |
Advantages & Benefits
- System simplification: replaces multiple 2-way valves and T-fittings, reducing installation cost and space.
- Versatile flow management: mixing, diverting or isolating flow depending on the port configuration chosen.
- Actuator-ready: the ISO-style top pad means you can automate the same valve later — no re-piping.
- Corrosion resistance: 316 stainless steel with added molybdenum resists pitting from chloride-bearing media, indoors or outdoors.
Dimensions (mm) — MV-3M
Key dimensions in millimetres. Full stem and mounting-pad details are in the MV-3M dimension sheet (PDF).
| Size | Bore Ød | L | H | Handle D | F | ISO pad (N × M on PCD E) |
|---|---|---|---|---|---|---|
| 1/4″ | 11 | 69.3 | 58 | 132 | 34.7 | 4 × M5×0.8 (Ø42) |
| 3/8″ | 11 | 69.3 | 58 | 132 | 34.7 | 4 × M5×0.8 (Ø42) |
| 1/2″ | 12.5 | 75.7 | 61 | 132 | 38.3 | 4 × M5×0.8 (Ø42) |
| 3/4″ | 16 | 86.6 | 82 | 180 | 44.7 | 4 × M6×1.0 (Ø50) |
| 1″ | 20 | 103 | 87.5 | 180 | 50.8 | 4 × M6×1.0 (Ø50) |
| 1-1/4″ | 25 | 118.2 | 93 | 180 | 57.7 | 4 × M6×1.0 (Ø50) |
| 1-1/2″ | 32 | 125.8 | 104 | 210 | 62.7 | 4 × M8×1.25 (Ø70) |
| 2″ | 38 | 149 | 112 | 225 | 74.6 | 4 × M8×1.25 (Ø70) |
Application Fields & Locations
- HVAC systems: by-pass lines and temperature mixing loops.
- Chemical processing: switching between ingredient lines or reactors.
- Tank farms: routing product between storage tanks with one valve.
- Water systems: alternating supply lines and filtration loops.
FAQ
L-port or T-port — which should I choose? Choose L-port to switch flow between two destinations (two tanks, two pumps, two lines) — it diverts 90° and can also shut off. Choose T-port to mix two lines into one, run straight through, or divert to a third port. Both are in stock.
Can a 3-way ball valve shut off flow completely? The L-port ball can be rotated to an OFF position between outlets. The T-port is designed for mixing and diverting — tell us your switching pattern and we will confirm the right ball and stopper configuration.
Can this valve be automated later? Yes. It has an ISO-style top mounting pad, so a pneumatic or electric actuator mounts directly. If you want it supplied automated, see our pneumatic 3-way ball valve.
Which thread standards are available? PT (tapered) threads are in stock. NPT and PF can be made to order — tell us which standard your piping uses when you request a quote.
What is the working temperature range? -20 °C to +180 °C (-4 °F to +356 °F), limited by the PTFE seats.
304 or 316 — which should I choose? The standard valve is CF8M (cast 316), in stock — its molybdenum content resists pitting from chlorides. CF8 (cast 304) is made to order for general water and air duty.
See all 3-way ball valve models — manual, pneumatic, sanitary & vacuum →
Sample Policy
We are happy to provide product samples for customers to evaluate quality or conduct testing. The process typically begins with a quotation based on the customer’s specifications.
If the pricing is acceptable, we can offer samples either free of charge or at a cost depending on the product type and availability.
Shipping fees are borne by the customer.
Order Process
After confirming the product requirements and other details with the customer, we will issue a Sales Confirmation for approval. Once confirmed, the customer is required to pay a 30% deposit to proceed with production.
When mass production is completed and the goods pass inspection, the customer must pay the remaining 70% balance before shipment is arranged.
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FAQ
A. How can I request a quote?
Please provide a detailed inquiry sheet including product specifications, materials, quantities, and any special requirements. We will offer a quotation based on your request.
B. What are your quotation terms?
Our quotations are typically based on FOB terms. However, we can also offer CFR, CIF, or other Incoterms upon request.
C. What is your Minimum Order Quantity (MOQ)?
We have no MOQ. We operate on a made-to-order basis and accept orders of any size — trial orders are welcome. For smaller orders, freight is arranged and borne by the buyer.
D. What are your payment terms?
By T/T – 30% down payment upon order confirmation, and 70% balance before shipment.
E. What is your lead time?
Lead time depends on order quantity and specifications. We will confirm the exact schedule when you request a quote.
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