TOPAZ
TOPAZ - top-of-the-range universal valve for strength
The TOPAZ series is undoubtedly the spearhead of Enolgas Bonomi S.p.A. industrial valves. It is about a series of double flange (split-body) valves typically used in industrial and plant engineering applications, in different sectors such as: chemical, food, oil sector etc.
The durability and versatility makes it a universal product, suitable for those customers who want to focus on products of the highest quality and resistance. The gauge and the pressure class is regulated by the DIN standard and allows a perfect fit interchangeability with products from other manufacturers.
The production is available in stainless steel (AISI316) and in carbon steel (LF2). The TOPAZ series is characterised by the lateral seal in PTFE (on request in other special materials); upper seal in PTFE and with O-ring; antistatic device; anti-burst pin; threaded holes; body from bar.
The particular coupling between the PTFE gasket and the O-ring at the level of the valve pin, makes the same very soft in its opening and closing manoeuvres, as well as ensuring a high seal even in more severe application conditions.
All valves are tested and verified before sale and are guaranteed 2 years.
Material specification
COMPONENTS | Stanless steel | Carbon steel | ||
|---|---|---|---|---|
1 | BODY | AISI 316 D 1.4401 | LF2 | |
2 | BALL | AISI 316 D 1.4408 | AISI 304 D 1.4308 | |
3 | STEM | AISI 316 D 1.4401 | AISI 304 D 1.4301 | |
4 | O-RING | FLUOROELASTOMER | FLUOROELASTOMER | |
5 | PACKING WASHERS | AISI 304 D 1.4301 | AISI 304 D 1.4301 | |
6 | SPRING WASHERS | AISI 301 D 1.4310 | 50 CRV4 | |
7 | OPERATION STOP | AISI 304 D 1.4301 | Carbon steel 8.8 | |
8 | LOCKING NUT | AISI 304 D 1.4301 | A 105 | |
9 | LEVER HANDLE | AISI 304 D 1.4301 | A 105 | |
10 | STEM RETAINING NUT | AISI 304 D 1.4301 | A 105 | |
11 | STEM PACKING | PTFE | PTFE | |
12 | THRUST WASHER | PTFE | PTFE | |
13 | BALL SEATS | PTFE | PTFE | |
14 | BODY FLANGE | AISI 316 D 1.4401 | LF2 | |
15 | STATIC GASKET | PTFE | PTFE | |
16 | LOCKING NUT | AISI 304 D 1.4301 | A 105 | |
17 | STUD BOLT | A 193 B8 | A 193 B7 |
Characteristics
CHARACTERISTICS | Split-body ball valve heavy series from bar in stainless steel (AISI 316) and carbon steel LF2. |
END CONNECTIONS | Flanges to UNI EN 1092-1 and DIN2501 |
WORKING PRESSURE | PN16/40 from DN15 to DN80 |
TEMPERATURE LIMITS | From -20° C to +180° C |
SPECIAL EXECUTIONS | Special gaskets:
Stem extensions (50mm and 100mm) |
Breaking Torque in Nm
Values in Nm change depending on the application and material of the seats. Always consider a suitable safety factor.
Pressure/temperature diagram
