Face to Face EN 558-1 Relief Valve, Class 150-300, EN 1074-5

• Customization: Available
• Temperature: Low Temperature
• Media: Oil, Water
• Model NO.: F8050
• Standard: Standard
• Connection Mode: Flange
• Power: Hydraulic
• Material: Ductile Iron/Stainless Steel/Bronze
• Type: Self-Operated
• Pressure range: PN10-16-25-40/Class 150-300
• Design: EN 1074-5
• Face to face: EN 558-1 Series 1
• Flange drilling: EN 1092-2/ISO 7005-2/ANSI/AS2129 or AS4087
• Coating: Thermoplastic Powder Epoxy
• Transport Package: Wooden Box
• Specification: DN50-DN1200
• Trademark: WALTER, OEM
• Origin: China
• Production Capacity: 5000pieces/Year

Product Description

Pressure Relief/Sustaining Valve

F8050 Series

Production Description

WALTER F8050 model Pressure Relief/Sustaining Valve is a hydraulically operated, pilot-controlled, modulating valve designed to maintain constant upstream pressure within close limits. This valve can be used for pressure relief, pressure sustaining,back pressure functions in a by-pass system.In operation,the valve is actuated by line pressure through a pilot control system,opening fast to maintain steady line pressure but closing gradually to prevent surges. Operation is completely automatic and pressure settings may be easily changed by adjusting screw on top of the pilot.

 

Picture

 

Basic Information

 

 

Material Specification

DN50-350

NO.	Part Name	Material	Standard
1	Body	Ductile Iron	GJS 500-7
2	Seat	Stainless Steel	AISI 304
3	O-Ring	Rubber	NBR
4	O-Ring	Rubber	NBR
5	Bolt	Stainless Steel	A2-70
6	Washer	Stainless Steel	A2
7	Bonnet	Ductile Iron	GJS 500-7
8	Bush	Brass	C37710
9	Spring	Stainless Steel	AISI 304
10	Nut	Stainless Steel	A2
11	Diaphragm	Rubber+Nylon	EPDM+Nylon Fabric
12	Fixing Holder	Ductile Iron	GJS 500-7
13	Disc Holder	Ductile Iron	GJS 500-7
14	Seal	Rubber	EPDM
15	Seat Retainer	Stainless Steel	AISI 304
16	Stem	Stainless Steel	AISI 304
17	Plug	Stainless Steel	AISI 304

 

 

 

DN400-1200

NO.	Part Name	Material	Standard
1	Body	Ductile Iron	GJS 500-7
2	Seat	Stainless Steel	CF8
3	Screw	Stainless Steel	A2
4	Screw	Stainless Steel	A2
5	Washer	Stainless Steel	A2
6	Spring	Stainless Steel	AISI 304
7	Bonnet	Ductile Iron	GJS 500-7
8	Bush	Copper Alloy	Bronze/C61900
9	Stem Nut	Copper Alloy	Bronze/C61900
10	Fix Washer	Stainless Steel	AISI 304
11	Diaphragm	Rubber+Nylon	EPDM+Nylon Fabric
12	Eye bolts	Carbon Steel	1040
13	Fixing Holder	Ductile Iron	GJS 500-7
14	Disc Holder	Ductile Iron	GJS 500-7
15	Seal	Rubber	EPDM
16	Seal Retainer	Ductile Iron	GJS 500-7
17	Stem	Stainless Steel	AISI 304
18	O-Ring	Rubber	NBR
19	Screw	Stainless Steel	A2
20	Cap	Stainless Steel	AISI 304
21	Plug	Stainless Steel	AISI 304

 

Dimension

DN50-350

 

DN	L	φD				φK				N-φd
		PN10	PN16	PN25	PN40	PN10	PN16	PN25	PN40	PN10	PN16	PN25	PN40
50	230	165				125				4-φ19
65	290	185				145				4-φ19	4-φ19	8-φ19
80	310	200				160				8-φ19
100	350	200		235		180		190		8-φ19	8-φ19	8-φ23
125	350	250		270		210		220		8-φ19	8-φ19	8-φ28
150	480	285		300		240		250		8-φ23	8-φ23	8-φ28
200	600	340		360	375	295		310	320	8-φ23	12-φ23	12-φ28	12-φ31
250	730	405		425	/	350	355	370	/	12-φ23	12-φ28	12-φ31	/
300	850	460		485		400	410	430		12-φ23	12-φ28	16-φ31
350	850	520		555		460	470	490		16-φ23	16-φ28	16-φ34

 

DN400-1200

DN	L	φD			φK			N-φd
		PN10	PN16	PN25	PN10	PN16	PN25	PN10	PN16	PN25
400	1100	580	580	620	515	525	550	16-φ28	16-φ31	16-φ37
450	1200	640	640	670	565	585	600	20-φ28	20-φ31	20-φ37
500	1250	715	715	730	620	650	660	20-φ28	20-φ34	20-φ37
600	1450	840	840	845	725	770	770	20-φ31	20-φ37	20-φ40
700	1650	910	910	960	840	840	875	24-φ31	24-φ37	24-φ43
800	1850	1025	1025	1085	950	950	990	24-φ34	24-φ40	24-φ49
900	2050	1115	1125	/	1050	1050	/	28-φ34	28-φ41	/
1000	2250	1230	1255	/	1160	1170	/	28-φ37	28-φ44	/
1200	2650	1455	1485	/	1380	1390	/	28-φ40	28-φ49	/

 

About WALTER

Suzhou Walter is a professional china-based manufacturer of water system valves and always committed to providing customers with quality products and services.

The company has been established for more than 30 years, and has served more than 50 countries and regions around the world,the professional level High quality service worthy of your trust!