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

R-42 Kerotest Packless Globe Valve

Applications

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Model R-42 Packless Globe Valves

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 Fluids
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.

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

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