Teflon-Lined Diaphragm Valve

Flange Connection Globe Valve

① Main material: cast iron with PTFE lining, carbon steel with PTFE lining
② Nominal diameter: DN40 to DN400
③ Pressure range: 0.6MPa~4.0MPa
④ Operating temperature: -29℃~+150℃
⑤ Drive modes: manual, worm gear, electric, pneumatic, hydraulic
⑥ Application scope: Suitable for wastewater treatment, food processing, power generation, pharmaceuticals, metallurgy, and light textile industries. It is used for cutting or regulating and throttling on the pipeline of strong corrosive fluid such as energy.

Execution Standard

Design & Manufacture	GB 12239
Structure length	JB 1688
Flange Dimension	JB78 (or as required by the contract)
Pressure test	GB/T 13927
Marking	GB 12220
Supply of material	GB/T12252

G41F3/F46 Type Manual Diaphragm valve (Weir Type)

G45F3/F46 Manual Diaphragm Valve (DC Type)

Basic Type (Fully Lined)

Manual Operation	G41F3 (Pull-type)	Pneumatic	G641F3 (Reciprocating)
	G41F3 (Pull-type)		G641F3 (Reciprocating)
	G41F46 (Pull-type)		G641F4 6 (Reciprocating)
	G45F3 (DC type)		G6B41F3 (normally closed)
	G45F46 (DC type)		G6B41F (normally closed)
	G9B41F3 (Explosion-proof type)		G941F 3 (Standard)
Motor-driven	G9B41F46 (Explosion-proof type)	Motor-driven	G941F46 (Standard)

G941F3/F46 Electric Diaphragm Valve (Weir Type)

G641F3/F46 Pneumatic Diaphragm Valve (Reciprocating Type)

G6B41F3/F46 Pneumatic Diaphragm Valve (Normally Closed)

Design, test standards, and operating conditions

Order No.	Part name	Gray pig iron	Carbon steel	Stainless steel		Extra-low-carbon stainless
Order No.	Part name	Gray pig iron	Carbon steel	Stainless steel		Steel
		Z	C	P	R	PL	RL
	Valve body, valve cover, valve disc	HT250	WCB	CF8	CF8M	CF3	CF3M
	Valve stem	35	1Cr13	1Cr18Ni9	1Cr18Ni12MO2Ti	00Cr18Ni10	00Cr17Ni14Mo2
	Lining	FEP (F46), PCTFE (F3), PFA (soluble polytetrafluoroethylene), PO (polyolefin)
	Diaphragm	FEP (F46) / CR (Chloroprene Rubber) / PFA (Soluble Polytetrafluoroethylene) / FPDM (Ethylene Propylene Diene Monomer)
	Valve-stem nut	ZCuAl10Fe3 ZCuAl10Fe3
	Bolt	35	34	1Cr17Ni2	1Cr17Ni2	1Cr17Ni2	1Cr17Ni2
	Nut	45	45	OCr18Ni9	OCr18Ni9	OCr18Ni9	OCr18Ni9
	Handwheel	HT200	HT200	WCC	WCC	WCC	WCC

Key size measurements

PN0.6/1.0MPa
Inside nominal diameter		Standard value							Reference value
DN(mm)	NPS(inch)	L	D	D,	D2	f	b	Z-φd	DO	H1	H2	W(kg)
15	1/2	125	95	65	45	2	14	4-φ14	100	105	110	3.5
20	3/4	135	105	75	55	2	16	4-φ14	100	115	125	4
25	1	145	115	85	65	2	16	4-φ14	120	120	135	5.5
32	1 1/4	160	135	100	78	2	18	4-φ18	120	125	150	8
40	1 1/2	180	145	110	85	3	18	4-φ18	140	135	175	11
50	2	210	160	125	100	3	20	4-Φ18	140	155	195	14
65	2 1/2	250	180	145	120	3	20	4-φ18	200	170	200	23
80	3	300	195	160	135	3	22	4/8-φ18	200	200	255	29
100	4	350	215	180	155	3	22	8-φ18	280	270	325	46
125	5	400	245	210	185	3	24	8-φ18	320	335	405	70
150	6	460	280	240	210	3	24	8-φ23	320	370	450	95
200	8	570	335	295	265	3	26	8-φ23	400	480	600	170
250	10	680	390	350	320	3	28	12-φ23	500	545	620	270
300	12	790	440	400	368	4	28	12-φ23	500	585	680	320

Unless otherwise specified in the contract, the flange size of the diaphragm valve shall be manufactured at PN1.0MPa when the pressure is PN0.6MPa.
For flange dimensions PN1.0MPa and DN80, the bolt hole count is Z=4 under JB78 standard, while Z=8 applies to other standards.

PN1.6MPa
Inside nominal diameter		Standard value							Reference value
DN(mm)	NPS(inch)	L	D	D1	D2	f	b	Z-φd	DO	H1	H2	W(kg)
15	1/2	125	95	65	45	2	14	4-φ14	120	110	115	4
20	3/4	135	105	75	55	2	16	4-φ14	120	120	130	5
25	1	145	115	85	65	2	16	4-φ14	140	125	140	6
32	1 1/4	160	135	100	78	2	18	4-φ18	140	130	155	9
40	1 1/2	180	145	110	85	3	18	4-φ18	160	140	180	12
50	2	210	160	125	100	3	20	4-φ18	160	160	200	15
65	2 1/2	250	180	145	120	3	20	4-φ18	200	175	205	24
80	3	300	195	160	135	3	22	4-φ18	200	205	260	30
100	4	350	215	180	155	3	24	8-φ18	280	275	330	48
125	5	400	245	210	185	3	26	8-φ18	320	340	410	75
150	6	460	280	240	210	3	28	8-φ23	320	375	460	105
200	8	570	335	295	265	3	30	8-φ23	400	485	605	182
250	10	680	405	355	320	3	32	12-φ25	500	550	625	295
300	12	790	460	410	375	4	34	12-φ25	500	590	685	345