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Sleeve-packed Cocks
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Download PDF Technical Sheet Size: DN 5 - DN 8 
Rating: PN 160 - ASME Class 600 at 550 °C.
Materials: ASTM A105 or ASTM A182 F316
Connections: female or male screwed according to UNI 338, DIN 259, BSP 2779, ASME B12.1- Other connection available

Sleeve-packed-cock

1  Body
2 Plug
3 Ring
4 Packing sleeve
5 Eyelets
6 Tightening nut
7 Screw and washer
8 Handle

APPLICATION RANGE
BONT sleeve-packed cocks type "RM" are shut-off cocks. Type RM 421 is moreover a boiler blow-down controlling cock.

DESIGN PRINCIPLES
BONT® sleeve-packed cocks have "soft seal" obtained by means of a packing sleeve fitted in the body between body and plug. The advantages of this system have been verified by very many users that have installed millions of cocks of this type all over the world in all operative fields.

Features:

  • circular through flow passage
  • very long life of body and plug, since the elastic packing sleeve is interposed between these two pieces
  • no sensitivity to changes of temperature
  • no possible plug seizure
  • best performances at low and high temperature up to 350 ¸ 400 °C
  • possibility of restoring thightness during service by compressing packing sleeve
  • complete interchangeability of worn pieces
  • packing sleeve can be replaced by unskilled personnel without removing the cock from the vessel. After sleeve change the cock is as good as new

Maximum working temperatures depends on the body and bonnet material:

Body and bonnet of ASTM A105:
Max Temp. 425 °C

Body and bonnet of ASTM A182 F316:
Max Temp. 550 °C.

BONETTI Valves type VS are in accordance with Standard Practice MSS SP-99 - Instrument Valves.

CONNECTIONS
Standard connections are:
  • flanged to UNI, DIN, NFE, etc
  • female screwed to UNI 338, DIN 259, BSP 2779; ANSI B2.1 or other
  • male screwed to UNI 338, DIN 259, BSP 2779; ANSI B2.1 or other
  • other connections on request

 

A world leader in Valves

Since 1905 Cesare Bonetti S.p.A. has been manufacturing high performance valves and liquid level indicators, both as standard or as custom designed products to meet the exact requirements of any fluid  pressure and temperature handling application. Thanks to our reputation and experience, our trademarks BONETTI, BONT, CMI and WVE are  recognized worldwide as a guarantee in terms of quality reliability and service to our Customers.

Certifications

Below our primary certifications:

ISO 9001:2008;
Nuclear ASME N Stamp;
Nuclear ASME NPT Stanp;
API 6A-1306  -   API 6D-1213;
API Specification Q1;
ISO/TS 29001;
Pressure Equipment Directive "PED" 97/23/EC;
ATEX - 94/9/EC;
SIL

certificazioni_hp

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