A compact SS316 quarter-turn valve for gauge, drain and instrument isolation. 1000 PSI, and the only variant on this range that goes down to 1/8″ (DN6). Threaded BSPP or NPT, for −29 °C to 150 °C.
State the size, BSPP or NPT, and the space you have — the lever still needs a clear 90° sweep. Quotes within 2 working hours.
| Pattern | Male × female — no adaptor |
|---|---|
| Range | 1/8″ to 1″ (DN6–DN25) |
| Bore | Reduced bore — an isolation valve, not a flow device |
| Pressure | 1000 PSI cold |
| Temperature | −29…150 °C |
| Body | Stainless steel SS316 |
| Ends | Threaded BSPP or NPT |
| Operation | Quarter turn manual lever |
The six-size dimension table, the 7-item bill of materials and the sectional drawing are all on this page, as printed in the catalogue.
Small isolation, where a full-size valve will not fit.
A mini ball valve does the same quarter-turn job as the full-size valves on this range, in a much smaller body. It is a male × female pattern, which means it screws directly into a female port and presents a female thread on the other side — so it drops straight into a gauge tapping, a drain point, a sample point or an instrument line without an adaptor.
It is the only source of 1/8″ (DN6) anywhere on this range — every other variant starts at 1/4″. If you need to isolate a small instrument tapping, this is the valve.
The same rating as the full-size stainless valves, in a fraction of the space. Against the brass mini at 300 PSI, that is more than three times the pressure for the same footprint.
The body, ball and cap are SS316, but the stem and bolt are SS304 and the lever is aluminium. It is a lighter-duty build than the full-size stainless valves despite carrying the same 1000 PSI — and there is no anti-static device. Worth knowing on aggressive or hydrocarbon service.
The male end goes into the existing port and the female end takes the gauge or the tube fitting. On a crowded manifold, not needing an extra nipple is often the reason this valve gets specified.
These are isolation valves for instrument and drain duty, not flow devices. Bore figures are in the table.
It still needs a clear 90° sweep, and on a small valve in a tight cluster that is easy to overlook. Check the width and length columns before ordering.
All photographs of the stocked item, not renders.
One end male, one end female. It threads straight into an existing port and presents a female thread for the gauge or fitting — no adaptor needed.
The whole valve is not much bigger than the thread. Which is the reason to choose it — and the reason the bore is reduced.
Still 90° of travel. Check the swing clearance on a crowded manifold — a small valve still needs a full quarter turn to seal.
Everything that goes on a purchase order.
| Item | Detail |
|---|---|
| Size range | 1/8″ to 1″ (DN6 to DN25) |
| Pattern | Male × female — threads into a female port, presents a female thread |
| Body material | Stainless steel SS316 |
| Working pressure | 1000 PSI cold — derate for temperature |
| Working temperature | −29 °C to 150 °C |
| Connection type | BSPP or NPT |
| Bore | Reduced bore — an isolation valve, not a flow device |
| Seat | PTFE |
| Operation | Quarter turn manual lever |
| Typical duty | Gauge tappings, drain and sample points, instrument isolation |
| Stock | Singapore and Malaysia warehouses — out within 24 hours |
6 sizes, dimensions in millimetres. Check the width W and length L against the space you have — on a crowded gauge manifold these are the dimensions that decide whether the valve fits.
| Size | Bore D | Height H | Width W | Length L | Weight (kg) |
|---|---|---|---|---|---|
| 1/8″ | 7 | 26.5 | 22.9 | 40 | 0.081 |
| 1/4″ | 7 | 26.5 | 22.9 | 40 | 0.081 |
| 3/8″ | 7 | 26.5 | 22.9 | 40 | 0.084 |
| 1/2″ | 9.2 | 29.3 | 22.9 | 46 | 0.105 |
| 3/4″ | 12.5 | 31.5 | 22.9 | 54 | 0.105 |
| 1″ | 15 | 34 | 22.9 | 65 | 0.284 |
1/8″, 1/4″ and 3/8″ carry the same 7 mm bore, 26.5 mm height and 40 mm length — machined from the same blank with a different thread, so the physical envelope does not change even though the connection does.
Across all six sizes. If the valve has to sit between two closely spaced tappings, that is the one figure to check.
These are isolation valves — sized to shut off a small line reliably, not to pass maximum flow. If you need flow, use a full-size full-bore two-piece.
The catalogue does not publish order codes for this range. State the size and thread form on your enquiry and we confirm the order code before anything ships.
So these can generally be carried on the tubing — but a gauge hanging off one is a different matter, and that wants supporting.
Numbered to match the parts list below. The section shows the compact SS316 body, the male × female pattern, and the reduced bore through the ball — small because the valve is an isolator, not a flow device.
| No | Part name | Material |
|---|---|---|
| 1 | Body | SS316 and CF8M |
| 2 | Ball | SS316 |
| 3 | Cap | SS316 |
| 4 | Ball Seat | PTFE |
| 5 | Stem | SS304 |
| 6 | Bolt | SS304 |
| 7 | Lever | Aluminium |
The body, ball and cap are SS316, but the stem and bolt are SS304 and the lever is aluminium. A lighter-duty build than the full-size stainless valves despite the same 1000 PSI — and no anti-static device.
Which is what sets the 150 °C ceiling and why the pressure rating falls as the line warms.
The full-size stainless two-piece lists thirteen. Fewer parts in a smaller body — which is why it fits, and why it does less.
Lighter and cheaper than a stainless lever, and outside the pressure boundary — but it is the part most likely to be knocked or corroded on an exposed installation.
| Temperature | Pressure (bar) | Pressure (PSI) | Share of cold rating |
|---|---|---|---|
| −30…+20 °C | 63 | 914 | 100% |
| 40 °C | 59.8 | 867 | 95% |
| 60 °C | 56.5 | 819 | 90% |
| 80 °C | 53.3 | 773 | 85% |
| 100 °C | 50.1 | 727 | 80% |
| 120 °C | 46.8 | 679 | 74% |
| 140 °C | 43.6 | 632 | 69% |
| 150 °C | 42 | 609 | 67% |
The same curve applies across the stainless range, because it is the PTFE seat that limits, not the body. Read off the manufacturer's curve and interpolated along its straight section — treat these as approximate for selection.
Flat, then falling, then a wall. 63 bar from −30 °C to about +20 °C, then a straight decline to 42 bar at 150 °C, where it drops vertically to zero.
A mini valve is chosen on space first, then pressure.
All eight, side by side: the comparison table.
Dimensions are in the catalogue, as printed; stock and price are not — send the list and we confirm both.
Small isolation where a full-size valve will not fit — gauge tappings, drain and sample points, and instrument lines. It is a male × female pattern, so it threads directly into an existing female port and presents a female thread for the gauge or tube fitting, saving an adaptor on a crowded manifold.
One end has a male thread and the other a female thread. The male end screws into the port you are isolating; the female end receives the gauge, the tube fitting or the next component. It means you can add isolation to an existing tapping without adding a nipple.
1000 PSI cold. That is the same rating as the full-size stainless valves, in a much smaller body — and more than three times the brass mini at 300 PSI. Both figures derate as the line warms: about 67% at 150 °C.
BSPP or NPT. They are not interchangeable with each other — a mismatched pair engages and feels tight, then leaks. If you are unsure which is on the existing tapping, send a photo before ordering. The brass mini, by contrast, is BSPP only.
1/8″ (DN6), and this is the only variant on the whole range that offers it — every other ball valve here starts at 1/4″. If you need to isolate a small instrument tapping, this is the valve.
SS316 body, ball and cap, with a PTFE ball seat. Note the stem and bolt are SS304 rather than SS316, and the lever is aluminium — a lighter build than the full-size stainless valves despite the same 1000 PSI, and with no anti-static device.
No — reduced bore, and deliberately so. A mini valve exists to shut off a small line in a small space, not to pass maximum flow. The bore figures are in the size table. If flow matters, use a full-size full-bore two-piece.
Pressure and environment decide it. The brass mini is 300 PSI; this one is 1000 PSI. Choose SS316 for higher pressure, corrosive or marine service, or where you need NPT; choose brass for water and air at modest pressure where cost rules. The brass mini · all eight compared.
Held in our Singapore and Malaysia warehouses, out within 24 hours of your PO; quotes within 2 working hours.
Related: brass mini for 300 PSI duty · all ball valves · class 150 threaded fittings.
