Innovative Valve Solutions for Safety and Back Pressure Management

We provide safety valve and back pressure valve for fluid system. They are available in various connections and materials to satisfy almost all fluid system constructions.

Our safety valves are built on advanced design concepts and manufacturing processes, enabling rapid response when pressures exceed safe limits, effectively safeguarding the system from damage. Our back pressure valves, with their precise control mechanisms, ensure fluid flows in the correct direction while maintaining pressure balance within the system, effectively preventing system failures due to pressure fluctuations or backflow.

Our product line ranges from standard models to highly customized solutions to meet the needs of various industries and applications.

Specifications
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Specification

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186 Type
186 Hose Type
186-F Type
186-B Type

Technical Parameters

Material: UPVC, PP, CPVC, PVDF, SUS304, SUS316L;
Working pressure: 0–1.0 MPa, 0.2–1.6 MPa;
Caliber size: DN15, DN20, DN25, DN32, DN40, DN50, DN65;
Connection method: bonding, hot melt welding, threaded, flange;
Diaphragm material: PTFE+rubber composite.

Three 186 type safety valve / back pressure valve on white background.

A dimension drawing of 186 type safety valve / back pressure valve.

Table 1: Size Table of 186 Type Safety Valve / Back Pressure Valve
Model	Size	L (mm)	H (mm)	D (mm)	d (mm)	z (mm)	h (mm)
18615	DN15	166	154	82	20	18	27
18620	DN20	170	173	82	25	21	27
18625	DN25	212	173	107	32	26	35
18632	DN32	226	173	107	40	28.5	35
18640	DN40	292	225	148	50	37	58
18650	DN50	305	225	148	63	37	58
18665	DN65	390	225	148	75	42	58

Technical Parameters

Material: UPVC, PP, CPVC, PVDF
Hose specification: ɸ6, ɸ8, ɸ12

Three 186 hose type safety valve / back pressure valve on white background.

A dimension drawing of 186 hose type safety valve / back pressure valve.

Technical Parameters

Material: UPVC, PP, CPVC, PVDF

Three 186-F type safety valve / back pressure valve on white background.

A dimension drawing of 186-F type safety valve / back pressure valve.

Table 2: Size Table of 186-F Type Safety Valve / Back Pressure Valve
Model	Size	L (mm)	D (mm)	H (mm)	h (mm)	d (mm)
18615-F	DN15	145	82	154	27	95
18620-F	DN20	145	82	173	27	105
18625-F	DN25	182	107	173	35	115
18632-F	DN32	196	107	173	35	140
18640-F	DN40	243	148	225	58	150
18650-F	DN50	255	148	225	58	165
18665-F	DN65	278	148	225	58	185

Technical Parameters

Material: Stainless steel SUS304, SUS316L

Three 186-B type safety valve / back pressure valve on white background.

A dimension drawing of 186-B type safety valve / back pressure valve.

Table 3: Size Table of 186-B Type Safety Valve / Back Pressure Valve
Model	Size	L (mm)	D (mm)	H (mm)	h (mm)	G	Flange Type Length (mm)
18615-B	DN15	95	82	147	23	G1/2" (F)	172
18620-B	DN20	95	82	147	23	G3/4" (F)	174
18625-B	DN25	119	107	160	26	G1" (F)	190
18632-B	DN32	119	107	160	26	G1-1/4" (F)	194
18640-B	DN40	181	155	207	32	G1-1/2" (F)	270
18650-B	DN50	181	155	207	32	G2" (F)	274