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    Kerotest 800-876-0036
Phone: 847-356-0566
Fax: 847-356-0747
E-Mail: sales@mmcontrol.com

  Kerotest Valves  GLOBE VALVES

800-876-0036

Phone: 847-356-0566      Fax: 847-356-0747      E-Mail: sales@mmcontrol.com

  Packless Globe Valve

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   R-42 Kerotest Packless Globe Valve

Applications

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Model R-42 Packless Globe Valves

Kerotest Globe Valve
Kerotest Packless Globe Valve
  • Hazardous Liquids and Gases
  • Vacuum Service
  • Volatile Fluids
  • Controlling Contaminants
  • Instrumentation
  • Natural Gas Odorizing
  • Hydrogen Cooled Generators
  • Refrigerant Service
  • Compressed Gases
  • Leakage Monitoring
Packless Globe Valve  
 

Benefits & Features

Zero environmental leakage. No packing to maintain or replace. Dual seats above and below. Compact design - quick opening. Variety of body and seat materials. Cycle life varies with the application.

Design Principle

The unique feature of this concept is the prevention of liquid or gas media from escaping to the atmosphere. This is achieved by the packless-metal-diaphragm concept in which a seal is effected by the diaphragms being held in place with the body and bonnet engagement.

Globe Valve Design Principle

When the valve handwheel is turned from an open to closed position, the bottom head of the stem deflects the diaphragm assembly which depresses the spindle, over-coming the spring lift, until the seat insert closes the body orifice. On opening, the spring energy raises the insert from the body orifice.

The unique design eliminates environmental leakage as well as costly packing maintenance . . . a distinct advantage from many viewpoints, including safety, loss of valuable or dangerous media, and overall cost of maintenance for the life of the system.

Ordering Table

Figure No. Size (inches) Body Internals Seat Max. W.P.
PSI
Max.Temp.
(F)
Weight (lbs)
Approx.
R42A01P
R42A02P
R42A03P
R42A04P
 
1/8" FPT
1/4" FPT
3/8" FPT
1/2" FPT
 
Brass
Brass
Brass
Brass
 
Brass
Brass
Brass
Brass
 
Nylon
Nylon
Nylon
Nylon
 
750
750
500
500
 
275
275
275
275
 
1
1
2
2
 
R42R02P
R42R03P
R42R04P
R42U02P
R42U03P
R42U04P
R42U06P
R42U08P
R42X60FT
R42U02SW
R42U03SW
R42U04SW
R42X33W
R42U06SW
R42U08SW
1/4" FPT
3/8" FPT
1/2" FPT
1/4" FPT
3/8" FPT
1/2" FPT
3/4" FPT
1"    FPT
1/2" FPT
1/4" S.W.
3/8" S.W.
1/2" S.W.
1/2" S.W.
3/4" S.W.
1"    S.W.
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
Brass
303 SS
303 SS
Teflon®
Teflon®
Teflon®
Nylon
Nylon
Nylon
Nylon
Nylon
Teflon®
Nylon
Nylon
Nylon
Nylon
Nylon
Nylon
750
500
500
750
500
500
300
300
1000
750
500
500
500
300
300
300
300
300
275
270
275
275
275
300
275
275
275
275
275
275
1
2
2
2
2
2
5
5
2
1
2
2
2
5
4
R42X23TC
R42X23T
R42X23
R42C06P
R42C08P
R42X48T
R42X24A
R42X24B
R42X24WC
R42X24WCT
R42C06SW
R42C08SW
456-C12SWT
456-C16SWT
3/8" FPT
1/2" FPT
1/2" FPT
3/4" FPT
1"    FPT
1/2" FPT
1/4" S.W.
3/8" S.W.
1/2" S.W.
1/2" S.W.
3/4" S.W.
1"    S.W.
1.5" S.W.
2"    S.W.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
Carbon S.
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
303 SS
Carbon S.
Carbon S
Teflon®
Teflon®
Nylon
Nylon
Nylon
Teflon®
Teflon®
Teflon®
Nylon
Teflon®
Nylon
Nylon
Teflon®
Teflon®
500
500
500
300
300
1000
500
500
500
500
300
300
300
300
300
300
275
275
275
300
300
300
275
300
275
275
300
300
2
2
2
5
5
2
2
2
2
2
5
5
22
22
Typical Cv  Valves: 1/2"-1.5, 3/4"-2.3, 1"-2.4, 1.5"-21.0, 2"-24.0


Key: FPT = Female Pipe Thread

        SW  = Socket Weld

 

Hermetic Bellows Stem Seal

 

 

     

Hermetic Stem Seal Device

Applications

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Bellows Stem Seal

Kerotest Hermetic Bellows Stem Seal
Any application where emissions to the environment must be eliminated including, but not limited to:
  • Hazardous FluidsKerotest Hermetic Bellows
  • Expensive Gases
  • Noxious Odors
  • High Purity Gases
  • High Vacuum Service
  • Double Walled Systems
  • Inaccessible Piping
  • Carcinogens
Hermetic Bellows Stem Seal  

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Benefits & Features

The Hermetic Stem Seal Device eliminates the familiar valve stem leakage problem on 1/4 turn valves. 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, non-rising stem valves (including plug, ball and butterfly) and can be used in 360 degree or quarter turn applications.

Standard Design

When this unique device is adapted to a ball valve the final result is:

HSS Design Schematic

 

 

 

 

 

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.

 

 

Request Technical Literature           

   

 

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Phone: 847-356-0566      Fax: 847-356-0747      E-Mail: sales@mmcontrol.com

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