FEATURES

High Pressure:

High inlet and outlet pressures; high
pressure drops.
Balanced Trim:

Minimizes the effect of large changes
in inlet pressure such as those
encountered with bottled gas.
Tight Shutoff:

Composition seat provides bubble-tight
shutoff.
High Capacity:

Allows banking of bottled gas thru one
regulator.
Adjustment Ease:

Radial roller bearings to reduce frictional
forces and wear on higher spring ranges.

APPLICATIONS
Designed primarily for controlling clean gases. Handles bottled
gas up to 3000 psig (207 Barg) inlet pressure, with a maximum
pressure drop of up to 2990 psid (206 Bard).
Use in liquid service is for non-cavitating fl uids up to 600 psid
(41.4 Bard) pressure drop, metal seated.

Body Sizes:

1/2”, 3/4”, 1”, 1-1/2”
(DN 15, 20, 25, 40).
Body Materials:

Mn Brz – Manganese Bronze.
CS – Carbon Steel.
SST – Stainless Steel.
(See Table 1.)
End Connections:

NPT female,
Opt-30: 300#,600#,900#,1500#
RF fl anged.
Opt-31: BSPT Tapered Thread.
Opt-32: Ex tend ed plain end nip ples.
Opt-34: 14” Face to Face Flange Dim.
Inlet Pressure:

Up to 3000 psig (207 Barg).
Inlet Temperature:

Metal Seat – Std. up to 350/400°F
(177/205°C).
Opt-46G up to 600°F (316°C), CS or
SST only.
Comp. TFE Seat – Up to 150°F (65°C).
Comp. Nylon Seat – Up to 200°F (93°C).
See Table 4.
Outlet Pressure:

Standard - Up to 325 psig (22.4 Barg),
metal or composition diaphragm.
Option-80 - Up to 750 psig (51.7 Barg)
metal diaphragm.

Maximum Pressure Drop:

Metal Seat - Std. up to 600 psid (41.4
Bard). Opt-15 up to 2400 psid (166
Bard).
Composition Seat - Up to 2990 psid
(206 Bard).
See Table 2.
Pressure vs. See Table 1.
Temperature Ratings:May be reduced when available fl anged
end connnections are selected. See
Tables 9 and 10.

Maximum Operating Capacity: See Tables 7 through 14.
Recommended practical limit of 20%
droop. See Table 5 for maximum wide
open Cv levels and orifi ce size.
Trim Designs: Primarily 316 SST material.
Metal Seat - Unbalanced; four material
combinations.
Composition Seat - Balanced; eight
material combinations.
See Table 4.
Range Springs: Standard: Epoxy coated steel.
LCC Body material: SST
Gaskets: Standard - Graphite/NBR - Diaphragm,
Cylinder & Closing. Cap.
Alternate Material: See Opt-45 & -46G.
Flange Bolting: Standard: Heat treated zinc plated
steel.
LLC body material: SST.
Painting: Standard: All non-corrosion resistant
portions to be painted with corrosion
resistant epoxy paint per Cashco
Spec #S-1606.
Alternate: See Opt-95.

Option -1:

CLOSING CAP. Use to prevent
tampering with the set point pressure.
Available on all spring chamber
materials. Consists of a ductile iron
closing cap, a sealing gasket, a sealing
lock nut on the adjusting screw, and a
1/4” (DN8) NPT female tapped spring
chamber vent hole.
Option -1+6:

DIFFERENTIAL CONSTRUCTION.
For differential pressure service.
Available only on manganese bronze
or carbon steel spring chambers.
Internal construction includes a large
pusher plate and an extra diaphragm
gasket (for metal diaphragms). Limited
to the use of the lower range springs
indicated below, and maximum loading
containment levels indicated in Table 1.

Option -15:

STELLITED SEATS. Stellited seating
surfaces on unbalanced metal seating
piston and cylinder. Can only be applied
to Trim S1.
Option -25:

TAPPED VENT. 1/4” (DN8) NPT
tapped open ing in spring cham ber
for pip ing vent to re mote lo ca tion, in
the event of di a phragm fail ure.
Option -25P:

PLASTIC RAIN PROOF BUG
VENT. (includes Opt-25).
Option -25S: SST RAIN PROOF BUG VENT.
(includes Opt-25).
Option -30:

FLANGED END CONNECTIONS.
Welded-on 300#, 600#, 900#, and
1500# (PN50, 110, 150, and 260) raised
face fl anges available for carbon steel
or 316 SST bodies. Flanges and nipples
of same basic material as body. Nipples
and Flanges are socket weld design.
With 300# (PN50) fl anges, the
fl angepressure ratings are the pressure
limiting factors, not the body inlet ratings.
(Refer to Tables 9 and 10 for allowable
working pressure vs. temperature.).
With 600#, 900# and 1500# fl anges, the
body outlet is the pressure limiting factor
per Table 1.

See dimension “H” on Dimension
& Weight Table for face-to-face
dimensions of fl anged units.