Any Application where
emissions to the environment must be eliminated including, but not
limited to:
Hazardous Fluids
Expensive Gases
Noxious Odors
High Purity Gases
High Vacuum Service
Double Walled Systems
Inaccessible Piping
Carcinogens
The Kerotest Manufacturing Corporation has
developed a method of eliminating the familiar valve stem leakage problem on 1/4
turn valves. This new product is the Hermetic Stem Seal Device. This device uses
a metal bellows around the stem instead of standard seals or packing.
The zero leakage feature greatly reduces valve
maintenance eliminating the need for costly repair parts, and labor and
additional repair to the nearby equipment and machinery that is damaged by the
leak. More importantly, process and plant downtime is reduced and the safety
problems associated with leakage and maintenance on critical service components
are eliminated.
The Hermetic Stem Seal Device is easily adapted to
most rotating, nonrising stem valves (including plug, ball and butterfly) and
can be used in 360 degree or quarter turn applications.
When this unique device is adapted to a ball valve
the final result is:
Specifications: Standard Design
Item
Part
Material
1
Bonnet
SS, ASTM A351,GR CF8M
2
Cover
SS, ASTM A351, GR, CF8
3
Stem
SS, Teflon Covered, ASTM A564,
GR 630
4
Bellows Assembly
SS, ASTM A240 Type 316
5
Handle
SS, ASTM A276 Type 316
6
Bearing
10% Glass Filled PTFE
7
Bearing
10% Glass Filled PTFE
8
Bearing
10% Glass Filled PTFE
9
Bearing
10% Glass Filled PTFE
10
O-Ring
Viton
11
O-Ring
Viton
12
O-Ring
Viton
13
Gasket
10% Glass Filled PTFE
14
Hex Head Cap Screw
Alloy Steel, ASTM A193 Grade B7
15
Hex Head Machine Screw
SS, Type 304
16
Set Screw
18-8 SS
17
Housing
SS, ASTM A351, GR, CF8M
Parts exposed
to the live fluid, excluding O-Rings, are the Bonnet(1), Stem(3) and
Bellows Assembly(4). Optional materials are as follows:
Optional Material
Inconel
Monel
Bonnet
Inconel 625
Monel 400
Stem
Inconel 625
K-Monel
Bellows
Inconel 625
Monel 400
Kerotest's HSS is currently installed on 1/4 turn Top
Entry Ball Valves
Sizes: 1/2", 3/4", 1", 2",
3", 4"
Pressure Classes: ANSI
classes 150#, 300#
End Connections: Flanged
and Buttweld
Valves are available in:
Carbon Steel:ASTM A126 GR WCB Carbon
Steel Body with 316 Stainless Steel Ball and Seat Rings, PTFE Seat, Stem
Seal and Gasket.
Stainless Steel:316 Stainless Steel Body
with 316 Stainless Steel Ball and Seat Rings, PTFE Seat, Stem Seal and
Gasket.
Ordering details
Call : Tom Ritchey at
412-521-7688
Pricing : per unit in US$
Shipment : F.O.B. Mansura, LA 71350,
USA
Terms : Net 30 days
Delivery : Typically 8 - 12 weeks
after receipt of order
Prices Stainless Steel Bellows,Bonnet and Stems in the HSS device.
Hazardous Fluids
