Orbit ball valve

The ball core of the Orbit ball valve features a hard-welded, polished sealing surface that ensures reliable sealing performance even under extremely demanding operating conditions.

Longzwas established in 2003 and has a total land area of 1,000 mu, including a valve production base in Changzhou. After more than 20 years of hard work and development, it has become a valve enterprise integrating technology, design, and manufacturing.

Orbit ball valve Manufacturer in China

Silt, short fibres and suspended solids score sealing faces on every stroke — and a scored seat leaks however hard you close it. Our Longz rising stem ball valve tilts the ball clear of the seat before it turns, so nothing rubs; a mechanical wedge makes the seal at the end of closing. Your seat is not worn stroke by stroke, and torque stays low.

various types of Our orbit ball valve

Floating ball valve

The floating ball valve has low fluid resistance. Among all types of valves, ball valves have the minimum fluid resistance, and even reduced-diameter ball valves exhibit relatively low fluid resistance. The switch is rapid and convenient. As long as the valve stem rotates 90 degrees, the ball valve completes the full opening or full closing action, making it easy to achieve quick opening and closing.

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riser ball valve

In a riser ball valve, the ball and the PTFE seat form the primary seal under the action of a medium-shaped spring. An O-ring is installed on the back of the seat to assist in sealing. Once the PTFE seat is damaged, the ball forms a metal seal with the valve body under the force of the spring.

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fully welded ball valve

The fully welded ball valve adopts an advanced spherical valve body combined with a longitudinal single-weld structural design, providing the valve with sufficient rigidity and strength to effectively overcome stresses caused by construction and terrain variations. The height-adjustable operation extension rod, adaptable to various burial depth conditions, is a more reliable and safe product for gas distribution PE pipelines.

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Application Scenarios of Orbit ball valve

Gas

Turn a gearbox valve and you feel the seat dragging. Our Longz orbit ball valve lifts the ball clear of the seat before it rotates, so nothing rubs through the travel and torque stays low. On most sizes that means a handwheel instead of a gearbox, and an actuator sized to the valve rather than to a friction spike.

Oil

Every valve costs you something: pressure drop, or weight and space. Our Longz orbit ball valve lets you pick which. Full bore keeps the flow path equal to the pipe, so it takes almost nothing out of your line. Standard bore gives up a little capacity for a smaller, lighter valve. In both, one machined guide groove and guide pin set drives stem lift and rotation together, clearing the ball off the seat before it turns.

power plant

Debris is what scores a seat, and on a conventional ball valve it is trapped between ball and seat and dragged across both faces every stroke. Our Longz orbit ball valve tilts the ball clear before it turns, so nothing is trapped — flow carries particles through and scrubs the seat instead of grinding them into it. Closing is a separate action: a cam at the stem’s lower end wedges the seat home mechanically, so your seal does not depend on line pressure.

Automatic pressure relief structure of orbit ball valve

Your line has a medium, a pressure, a temperature and an existing flange set — and a catalogue valve rarely matches all four. Our Longz rising stem ball valve is built around them: body, bonnet, stem, cam, ball and seat trim are combined from different materials to suit your medium, and dimensions follow your connection requirements, not ours.

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Your Trusted orbit ball valve supplier in China

Longz has obtained ISO 9001 international quality management system certification, ISO 14001 environmental management system certification, API certification from the American Petroleum Institute, and other certificates confirming that its products meet domestic and international authoritative quality standards. The company also holds more than 50 invention patents and technology innovation patents.

One-stop solution for orbit ball valve

We have a 24-hour after-sales service hotline. We will respond immediately to the quality problems reported by buyers. After-sales service personnel will make substantive responses and rush to the scene in the shortest time.

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Dimensions of the Orbit Ball Valve
certificate

Nominal diameter		Structural form	Dimensions				Flange connection dimensions						Double-threaded
in	mm	Structural form	L	H	h	W	D	D1	D2	T	f	n-d	Number	Thread
GQ47H/Y150Lb NPS~10in(25~250mm);GQ547H/Y-150Lb NPS12~20in(300~500mm)
1	25	A	216	285	255	160	108	79.5	51	12	7	4-15	4	W1/2
1 1/2	40	A	216	325	290	200	127	98.5	73	15	2	4-15	4	W1/2
2	50	A	216	345	305	200	152	120.5	92	16	2	4-19	4	W5/8
2 1/2	65	A	241	385	340	250	178	139.5	105	18	2	4-19	4	W5/8
3	80	A	282	445	400	250	190	152.5	127	19	2	4-19	8	W5/8
4	100	B	305	485	430	300	229	190.5	157	24	2	8-19	8	W5/8
6	150	B	403	620	560	350	276	241.5	216	26	2	8-22	8	W3/4
8	200	B	502	710	630	450	343	298.5	270	29	2	8-22	8	W3/4
10	250	C	673	850	770	350	406	362	324	31	2	12-25	12	W7/8
12	300	C	762	1050	970	400	483	432	381	32	2	12-25	16	W7/8
14	350	C	825	1230	1130	450	533	476	413	35	2	12-29	16	W1
16	400	C	902	1520	1400	600	597	540	470	37	2	16-29	16	W1
18	450	C	991	1610	1470	650	635	578	533	40	2	16-32	16	W1 1/8
20	500	C	991	1680	1520	700	699	635	584	43	2	20-32	20	W1 1/8
GQ47H/Y300Lb NPS~10in(25~250mm);GQ547H/Y-300Lb NPS12~20in(300~500mm)
1	25	A	216	285	255	160	124	89	51	18	7	4-19	4	W5/8
1 1/2	40	A	216	325	290	200	156	114.5	73	21	7	4-22	4	W3/4
2	50	A	216	345	305	200	165	127	92	23	7	8-19	8	W5/8
2 1/2	65	A	241	385	340	250	190	149	105	26	7	8-22	8	W3/4
3	80	A	282	445	400	250	210	168.5	127	29	7	8-22	8	W3/4
4	100	B	305	485	430	300	254	200	157	32	7	8-25	8	W3/4
6	150	B	403	620	560	350	318	270	216	37	7	12-29	12	W3/4
8	200	B	502	710	630	450	381	330	270	42	7	12-32	12	W1 7/8
10	250	C	673	850	770	350	445	387.5	324	48	7	16-35	16	W1 1
12	300	C	762	1050	970	400	521	451	381	5	7	20-35	16	W1 1/8
14	350	C	825	1230	1130	450	584	514.5	413	54	7	20-38	20	W1 1/8
16	400	C	902	1520	1400	600	648	571.5	470	58	7	20-41	20	W1 1/4
18	450	C	991	1610	1470	650	711	628.5	533	61	7	20-44	20	W1 1/4
20	500	C	991	1680	1520	700	775	686	584	64	7	24-44	24	W1 1/4

The process media flowing through our pipelines is corrosive, and there are temperature fluctuations. During selection, our primary concerns are the aging of sealing components and the erosion of sealing surfaces by the media. The valve seat of this valve can be equipped with either PTFE soft sealing or full-metal hard sealing. Based on the characteristics of the medium, we selected the hard sealing solution. The sealing surface has a thick enough weld overlay with substantial hardness and sufficient wear-resistant layer thickness. After more than two years of use,Almost no signs of erosion were observed during disassembly and inspection.
Engineer
Spanish Chemical Company
In our equipment area, the media contains particles and impurities. In the past, valves often became stuck due to scale buildup on the sealing surfaces. Maintenance required hot work and pipe disassembly, which involved open flames. This resulted in significant losses during each shutdown, causing substantial operational disruptions.The ball of the track ball valve first separates from the valve seat during opening and closing, allowing the fluid to flush along the sealing surface at 360°, resulting in a notably effective self-cleaning effect;The top-loading structure allows us to disassemble the valve cover and inspect or replace internal components online, without needing to detach the valve from the pipeline. This reduces the maintenance window by more than half.
Procurement Manager
American Gas Company

1.What is the most fundamental difference between track ball valves and ordinary ball valves?

The most fundamental difference lies in whether the sphere comes into contact with the valve seat during the opening and closing process. Traditional ball valves, whether floating or fixed type, maintain constant contact between the ball and the valve seat, rotating via friction, resulting in high switching torque and continuous wear on the sealing surface; The track ball valve allows the ball to first detach from the valve seat before rotating, with no friction throughout the process, fundamentally solving the problem of seal surface wear.

2.What is the diameter range of your track ball valves?

The nominal diameter range is DN60～DN600, covering large-diameter requirements.

3.What is the operating temperature of this Orbit ball valve?

The operating temperature range of this Orbit Ball Valve varies depending on the material, spanning from -196°C to~600°C.

What are the common materials used for the main body of your orbit ball valves?

The main body materials of this orbit ball valve include A105, WCB, LF2, and other materials.

5.What are the sealing types available for your Orbit Ball Valve?

This Orbit Ball Valve is available in both soft-sealed and hard-sealed configurations.

Operating Principle of Track Ball Valve

Initiation process

In the closed position, the valve core is tightly pressed against the valve seat under mechanical force applied by the valve stem.

When the handwheel is turned counterclockwise, the valve stem moves upward, and its bottom angular surface causes the valve core to deviate from the valve seat.

The third valve stem continues to rise and interacts with the guide pins in the spiral groove of the valve stem, causing the valve core to begin rotating without friction

At the fully open position, the valve stem has risen to its limit position, and the valve core has also rotated to the fully open position.

Shutdown process

To turn it off, rotate the handle clockwise. The valve stem begins to descend and causes the valve core to start rotating. Continue to turn the handwheel. The valve stem, interacting with the guide pin embedded in the screw groove on it, causes both the valve stem and the valve core to rotate 90 degrees simultaneously. Near the end of its closure, the valve core has rotated 90 degrees without contacting the valve seat. During the final few rotations of the handwheel, the angular flat surface at the bottom of the valve stem mechanically wedges against the ball center, pressing it tightly onto the ball valve.

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