Feiqiu Valve Co., Ltd.--Ball valves, Gate valves, Check valves, Globe valves, Butterfly valves, Plug valves, Control valves, Flanges

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Bellows throttle valve

Type of construction

Technical requirements
1?Design and manufacture
   ?Q/TFJ2?1009-1996,GB12228-89,GB12229-89,GB12230-89
2?Connection dimension
   ?Butt welded dimension in accoudance with GB12224-89
   ?Face-to-face dimension in accordance with DIN3202
3?Valve inspection and test
   ?GB/T 13927-92
4?Material
   1?Carbon steel in accoudance with stipulation of GB699
   2?Stainless steel in accordance with stipulation of GB1220

Materials of main parts

Main Part	Material	Main Part	Material
Body	Carbon steel	Bonnet	Cast steel
Seat ring disc	Bonnet	Gasket	Stainless steel+graphith
Upper & lower stems	Bonnet	Packing	PTFE
Bellows	Bonnet	Bolt	Alloy steel
Packing box	Carbon steel	Packing gland	Carbon steel

Performance specification

(MPa)

Tests	PN
Tests	2.5MPa	4.0MPa
PS Casing strength test	3.75	6.0
P Seal test	2.75	4.4
Gas tightness test	0.6	0.6
Temperature used	?350?
Suitable medium	Hot medium

Main dimension

(mm)

Gode	DN
Gode	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450
L	130	150	160	190	200	230	290	310	350	400	480	600	730	850	980	1100	1180
D	32	32	38	60	60	70	92	105	127	157	184	238	296	350	380	430	470
D1	22	28	34	43	49	61	75	91	117	144	172	223	278	329	362	413	464
D2	17	22	28	37	43	54	70	82	106	131	159	207	258	305	337	387	438
d	15	20	25	32	40	50	65	78	100	125	150	200	250	300	337	387	438
H	306	306	310	420	420	432	495	548	626	710	855	1016	1240	780	920	1006	1215
D0	148	148	148	196	196	196	220	250	320	320	400	500	600	*	*	*	*

Note:1.Use cast steel for the body of DN??65.

2.Materials of both packing and gasket can be supplied upon the users? demand.