Type 99

Table 3.  Maximum Allowable Drop and Minimum Differential Pressures

MAXIMUM

MAIN VALVE SPRING

 

 

MINIMUM

 

MAXIMUM port

ALLOWABLE

 

 

 

 

 

 

DIFFERENTIAL

 

Part

Wire Diameter,

Free Length,

SEAT MATERIAL

diameter

(1)

,

PRESSURE

PRESSURE FOR FULL

 

DROP, PSIG (bar)

Number

Inches (cm)

Inches (cm)

STROKE, PSIG (bar)

 

INCHES (mm)

25

(1,72)

1C277127022

0.148

(0,38)

6

(15,2)

0.75

(0,05)

Nitrile (NBR), Neoprene (CR),

1-1/8

(28,6)

 

Fluorocarbon (FKM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

(3,45)

1N801927022

0.156

(0,40)

7-1/8

(18,1)

1.5

(0,10)

Nitrile (NBR), Neoprene (CR),

1-1/8

(28,6)

 

Fluorocarbon (FKM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

150

(10,3)

1B883327022

0.187

(0,47)

6-5/8

(16,8)

3 (0,21)

Nitrile (NBR), Neoprene (CR),

1-1/8

(28,6)

 

Fluorocarbon (FKM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

175

(12,1)

1B883327022

0.187

(0,47)

6-5/8

(16,8)

3

(0,21)

Nitrile (NBR)(2), Neoprene (CR)(2),

7/8

(22,2)

 

Fluorocarbon (FKM)(2)

 

250

(17,2)

1B883327022

0.187

(0,47)

6-5/8

(16,8)

3

(0,21)

Nitrile (NBR), Fluorocarbon (FKM)

7/8

(22,2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0W019127022

0.281

(0,71)

6

(15,2)

10

(0,69)

Nitrile (NBR)(3), Fluorocarbon (FKM)(3)

1-1/8

(28,6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

300

(20,7)

0W019127022

0.281

(0,71)

6

(15,2)

10

(0,69)

Nylon (PA)

1-1/8

(28,6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

400

(27,6)

0W019127022

0.281

(0,71)

6

(15,2)

10

(0,69)

Nylon (PA)

7/8

(22,2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

600

(41,4)

0W019127022

0.281

(0,71)

6

(15,2)

10

(0,69)

Nylon (PA)

5/8

(15,9)

 

 

 

 

 

 

 

 

 

 

 

 

 

1000

(69,0)

0W019127022

0.281

(0,71)

6

(15,2)

10

(0,69)

Nylon (PA)

1/2

(12,7)(4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.  Can use all port diameters up to maximum size listed.

2. CL125 FF flanged body only.

3. O-ring seat only.

4. 1/2-inch (12,7 mm) is the only orifice available for 1000 psig (69,0 bar) maximum inlet pressure regulator.

Installation

!Warning

 •  Personal injury, equipment damage, or

   leakage due to escaping gas or

   bursting of pressure-containing

   parts might result if this regulator

   is overpressured or is installed where

   service conditions could exceed

   the limits for which the regulator was

   designed, or where conditions exceed

   any ratings of the adjacent piping or

   piping connections. To avoid such

   injury or damage, provide pressure-

   relieving or pressure-limiting devices

   (as required by the appropriate code,

   regulation, or standard) to prevent

   service conditions from exceeding

   those limits.

 •  A regulator may vent some gas to the

   atmosphere in hazardous or flammable

   gas service, vented gas might

   accumulate and cause personal injury,

   death or property damage due to fire or

   explosion. Vent a regulator in

   hazardous gas service to a remote,

   safe location away from air intakes or

   any hazardous location. The vent

   line or stack opening must be

   protected against condensation

   or clogging.

Like most regulators, the Type 99 regulator has a outlet pressure rating lower than its inlet pressure rating.

Complete downstream overpressure protection is needed if the actual inlet pressure can exceed the regulator outlet pressure rating or the pressure ratings of any downstream equipment. Although the Type H110 relief valve provides sufficient relief capacity to protect the extra high pressure pilot of the 1000 psig (69,0 bar) maximum inlet regulator in case the Type 1301F supply regulator fails open, this protection is insufficient if the main valve body fails open. Regulator operation within ratings does not preclude the possibility of damage from external sources or from debris in the lines. A regulator should be inspected for damage periodically and after any overpressure condition.

!Warning

The 1000 psig (69,0 bar) maximum inlet regulator must not be used on hazardous gas service unless the Type H110 relief valve can be vented into a safe area. If vented gas can accumulate and become a hazard in enclosed conditions such as in a pit, underground, or indoors, the relief valve must be repiped to carry the gas to a safe location.

A repiped vent line or stack must be located to avoid venting gas near buildings, air intakes, or any hazardous

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