600 series hytrol valve – Cla-Val 49-01/649-01 Technical Manual User Manual

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UNDERSTANDING THE 600 SERIES VALVES

In 1987, Cla-Val introduced the Model 100-20 Hytrol as the basic

main valve for the 600 Series of automatic control valves. To

identify all new valves using the 100-20 Hytrol, an existing cata-

log number is modified. Making a 600 Series catalog number is

simply done by using a "6" in front of the two digit catalog num-

bers or replacing the "2" with a "6" in three digit catalog num-

bers. Current schematics reflect both catalog numbers together

separated by a slash ( i.e. - 90-01/690-01, 58-02/658-02, 210-

01/610-01, etc). Since these two valves 'share' the same catalog

number and schematic, they provide the same function in a sys-

tem. The only difference between the two valves is the relative

capacity of the two main valve series.

The 100-01 Hytrol is the basic main valve for Cla-Val automatic

control valves. This valve is the current version of the Clayton

Hytrol valve design originated in 1936. The 100-01 Hytrol is

designed as a full flow area valve. This means that the inlet,

seat and outlet openings are the same size. Thus, the pressure

drop is kept to a minimum for this globe style design.

The 100-20 Hytrol valve has all of the basic features and advan-

tages of the original 100-01 Hytrol. Only one part has been

changed - the body. It is designed with different size inlet, seat

and outlet openings. The 100-20 Hytrol has inlet and outlet

flanges one valve size larger than the seat opening size. This

results in what is sometimes called a ''reduced port' main valve.

For example, a 4" 100-20 valve has a 3" seat. Note: valve size

is always determined by the flange size. The following chart

compares the 100-01 and the 100-20 main valves.

600 Series Hytrol Valve

100-20

MODEL

INSTALLATION / OPERATION / MAINTENANCE

SERVICE AND MAINTENANCE OF 600 SERIES
VALVES

The 600 series main valves have only one part -the body- that is

different from standard 100 Series Cla-Val main valve parts. The

remaining parts of the 600 series main valve are standard Cla-

Val main valve parts. All service and maintenance information

for the standard 100 Series main valves in this manual also

apply to the 600 series main valves.

The most important thing to remember when ordering main valve

repair kits and replacement parts, except for the body, all other

parts are going to be for a smaller size main valve. Cla-Val iden-

tifies main valve parts with the flange size of the standard 100

Series main valve. Refer to the "Main Valve Sizes Comparison"

chart. For example, if you are servicing a 6" 100-20 Hytrol and

needed a repair kit, you would order a repair kit for a 4" 100-01

Hytrol. This kit is also suitable for a 6" 100-20 Hytrol. Complete

Technical Manuals include a repair kit data sheet N-RK that

shows this relationship.

When you order repair parts, it is a good idea to include valve

nameplate data (size, catalog number, and part number) and

description of the parts desired. Do this to be sure parts will fit

the valve you are working on and not be too big for it. Pilot con-

trols and repair kits maintenance information remain the same

for 100 or 600 Series valves.

Cla-Val Main Valves

Catalog Number

The 100-20 Hytrol is available only in ductile iron, 150 and 300

pressure class, and Bronze trim standard. Available extra cost

main valve options include stainless steel trim, epoxy coating,

Dura-Kleen stem, Delrin sleeved stem, and high temperature rub-

ber parts. All four basic main valves have a 600 Series version

available with all of the same benefits and size relationships.

The following chart shows the relationship of Cla-Val main valve

catalog numbers.

Catalog Name

Hytrol

Powertrol

Powercheck

Hycheck

Circa 1936

100 (Angle =2100)

100P & 100PA

100PC & 100PCA

181

100-Series

100-01
100-02
100-03
100-04

600 Series

100-20
100-21
100-22
100-23

(Reduced Internal Port)

Basic Main Valve Size Comparison

Globe Pattern Valves

Flange Size (inch)

Seat Size

100-01

(100 Series)

100-20

(600 Series)

----

Angle Pattern Valves