1. Design and manufacture according to the requirements of BS 5351.
2. Smallest liquid resistance for valve types.
3. Quick open and close speed, it may finish open and close by only rotating 90 degree.
4. Seat material follows PTFE or reinforced PTFE, with low friction coefficient, reliable sealing, open and close smoothly.
5. There is wipe action between ball and seats suitable to the medium of suspend granule.
6. Stem with upper and top entry structure is to avoid the stem blow out under the pressure of medium.
7. According to need of consumer may design anti-static, fire-safe, and lock system to prevent wrong operation.
8. Ball may be floating type and trunnion type in accordance with open and closing torque. The seat of trunnion mounted ball valve is floating type which realize sealing by piston effection of medium pressure on seat and reduce open and close force.

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DN mm	in	L	D	D1	D2	b	n-φ d	H	D0	Weight
15	1/2	108	95	70	52	12	4-15	59	130	2.3
20	3/4	117	100	75	58	14	4-15	63	130	3
25	1	127	125	90	70	14	4-19	75	160	4.5
40	1 1/2	165	140	105	85	16	4-19	95	230	7
50	2	178	155	120	100	16	4-19	107	230	9.5
65	1 1/2	190	175	140	120	18	4-19	142	400	15
80	3	203	185	150	130	18	8-19	152	400	19
100	4	229	210	175	155	18	8-19	178	700	33
125	5	356	250	210	185	20	8-23	252	1100	58
150	6	394	280	240	215	22	8-23	272	1100	93
200	8	457	330	290	265	22	12-23	342	1500	160
250	10	533	400	355	325	24	12-25	345	1500	200
20K
15	1/2	140	95	70	52	14	4-15	59	130	2.5
20	3/4	152	100	75	58	16	4-15	63	130	3.5
25	1	165	125	90	70	16	4-19	75	160	5.5
40	1 1/2	190	140	105	85	18	4-19	95	230	10
50	2	216	155	120	100	18	8-19	107	230	14.5
65	1 1/2	241	175	140	120	20	8-19	142	400	23.5
80	3	283	200	160	135	22	8-23	152	400	30
100	4	305	250	185	160	24	8-23	178	700	55
125	5	381	270	225	195	26	8-23	252	1100	81
150	6	403	305	260	230	28	12-25	272	1100	118
200	8	502	350	305	275	30	12-25	342	1500	200
250	10	568	430	380	345	34	12-27	345	1500	250