Name: Three-Piece Manual Butterfly Valve
Brand: QINFENG
SKU: 00033
Rating: 4.9 (67 reviews)

Product Description

The three-piece manual butterfly valve features a modular clamp-body design that allows easy disassembly for seat inspection and replacement in branch circuits requiring periodic service. The valve delivers low flow resistance, low operating torque, and convenient maintenance access. Available in both Tri-Clamp and weld-end configurations to ASME BPE and DIN 11850 standards, with EPDM or silicone seal options. Fully degreased for liquid cooling compatibility.

Modular Clamp-Body Design

Easy disassembly for seat inspection and replacement

Low Flow Resistance

Optimized flow path for minimal pressure drop

Low Operating Torque

Convenient manual operation throughout service life

Maintenance-Friendly

Simplified service access in branch circuits

Technical Specifications

Nominal pressure	PN10/PN16
Temperature range	-40 ℃ to 100 ℃
Connection standard	Quick clip: ASME BPE
Welding	DIN 11850/ASME BPE
Test standard	GB/T 13927/API 598
Applicable media	water, ≤ 50% ethylene glycol/propylene glycol liquid

Overall dimensions

Quick installation three-piece manual butterfly valve ISO

SIZE	Dn	Dk	Df	L	L1	H	A×A	W	B
19	15.8	34	78	110	135	80	8x8	20	54
25	21.8	50.5	78	110	135	80	8x8	22	54
32	28.6	50.5	78	110	135	80	8x8	22	54
38	34.8	50.5	85	110	135	85	8x8	22	54
51	47.8	64	100	110	135	95	8x8	22	54
63	60.3	77.5	110	110	160	100	10x10	22	54
76	72.9	91	125	110	160	110	10x10	22	54
102	97.6	119	155	110	160	130	10x10	22	54
133	129	145	185	140	192	145	14x14	26	70
159	153	183	215	140	219	160	14x14	26	70
219	213.9	233.5	285	160	295	195	14x14	36	80

Quick installation three piece manual butterfly valve 3A

SIZE	Dn	Dk	Df	L	L1	H	A×A	W	B
0.75"	15.8	25.2	78	110	135	80	8×8	20	54
1"	22.1	50.5	78	110	135	80	8×8	22	54
1.25"	28.5	50.5	78	110	135	80	8×8	22	54
1.5"	34.8	50.5	85	110	135	85	8×8	22	54
2"	47.5	64	100	110	135	95	8×8	22	54
2.5"	60.2	77.5	110	110	160	100	10×10	22	54
3"	72.9	91	125	110	160	110	10×10	22	54
4"	97.4	119	155	110	160	130	10×10	22	54
5"	129	145	185	140	192	145	14×14	26	70
6"	146.5	167	215	140	219	160	14×14	26	70
8"	198	217.1	285	160	295	195	14×14	36	80
10"	248	268.5	325	160	315	215	14×14	36	80

Welding a three-piece manual butterfly valve ISO

SIZE	Dn	Dk	Df	L	L1	H	A×A	W	B
19	15.8	19	78	110	135	80	8×8	20	54
25	21.8	25	78	110	135	80	8×8	22	54
32	28.6	31.8	78	110	135	80	8×8	22	54
38	34.8	38	85	110	135	85	8×8	22	54
51	47.8	51	100	110	135	95	8×8	22	54
63	60.3	63.5	110	110	160	100	10×10	22	54
76	72.9	76.1	125	110	160	110	10×10	22	54
102	97.6	101.6	155	110	160	130	10×10	22	54
133	129	133	185	140	192	145	14×14	26	70
159	153	159	215	140	219	160	14×14	26	70
219	213.9	219.1	285	160	295	195	14×14	36	80

Welding a three-piece manual butterfly valve 3A

SIZE	Dn	Dk	Df	L	L1	H	A×A	W	B
0.75"	15.8	19.1	78	110	135	80	8×8	20	54
1"	22.1	25.4	78	110	135	80	8×8	22	54
1.25"	28.5	31.8	78	110	135	80	8×8	22	54
1.5"	34.8	38.1	85	110	135	85	8×8	22	54
2"	47.5	50.8	100	110	135	95	8×8	22	54
2.5"	60.2	63.5	110	110	160	100	10×10	22	54
3"	72.9	76.2	125	110	160	110	10×10	22	54
4"	97.4	101.6	155	110	160	130	10×10	22	54
5"	129	133	185	140	192	145	14×14	26	70
6"	146.8	152.4	215	140	219	160	14×14	26	70
8"	197.6	203.2	285	160	295	195	14×14	36	80
10"	248	254	325	160	315	215	14×14	36	80

Main part material

Number	Part	Material
1	Valve body	304/316L
2	Casing	PTFE
3	Butterfly valve disc	304/316L
4	Butterfly valve seal	Ethylene propylene diene monomer/silicone gel
5	Clamp cover	304/316L
6	Square/cylindrical handle	304
7	Cylindrical head hexagon bolt	304
8	Lock nut	304
9	Cylindrical head hexagonal bolt	304
10	13SRU is equipped with any U-shaped washer	EPDM/Silicone

The technical specifications of Qinfeng products are for reference only, and there may be slight differences between the actual product appearance and that shown in promotional materials.

Qinfeng reserves the right to update or modify product design and technical information, and will not provide prior notice to customers regarding updates and modifications.

Please contact Qinfeng promptly for detailed specifications and the latest product parameter information.