Type 99
Table 3. Maximum Allowable Drop and Minimum Differential Pressures
MAXIMUM | MAIN VALVE SPRING |
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ALLOWABLE |
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| DIFFERENTIAL |
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Part | Wire Diameter, | Free Length, | SEAT MATERIAL | diameter | (1) | , | ||||||||
PRESSURE | PRESSURE FOR FULL |
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DROP, PSIG (bar) | Number | Inches (cm) | Inches (cm) | STROKE, PSIG (bar) |
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25 | (1,72) | 1C277127022 | 0.148 | (0,38) | 6 | (15,2) | 0.75 | (0,05) | Nitrile (NBR), Neoprene (CR), | (28,6) |
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Fluorocarbon (FKM) |
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50 | (3,45) | 1N801927022 | 0.156 | (0,40) | (18,1) | 1.5 | (0,10) | Nitrile (NBR), Neoprene (CR), | (28,6) |
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Fluorocarbon (FKM) |
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150 | (10,3) | 1B883327022 | 0.187 | (0,47) | (16,8) | 3 (0,21) | Nitrile (NBR), Neoprene (CR), | (28,6) |
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Fluorocarbon (FKM) |
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175 | (12,1) | 1B883327022 | 0.187 | (0,47) | (16,8) | 3 | (0,21) | Nitrile (NBR)(2), Neoprene (CR)(2), | 7/8 | (22,2) |
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Fluorocarbon (FKM)(2) |
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250 | (17,2) | 1B883327022 | 0.187 | (0,47) | (16,8) | 3 | (0,21) | Nitrile (NBR), Fluorocarbon (FKM) | 7/8 | (22,2) |
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0W019127022 | 0.281 | (0,71) | 6 | (15,2) | 10 | (0,69) | Nitrile (NBR)(3), Fluorocarbon (FKM)(3) | (28,6) |
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300 | (20,7) | 0W019127022 | 0.281 | (0,71) | 6 | (15,2) | 10 | (0,69) | Nylon (PA) | (28,6) |
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400 | (27,6) | 0W019127022 | 0.281 | (0,71) | 6 | (15,2) | 10 | (0,69) | Nylon (PA) | 7/8 | (22,2) |
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600 | (41,4) | 0W019127022 | 0.281 | (0,71) | 6 | (15,2) | 10 | (0,69) | Nylon (PA) | 5/8 | (15,9) |
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1000 | (69,0) | 0W019127022 | 0.281 | (0,71) | 6 | (15,2) | 10 | (0,69) | Nylon (PA) | 1/2 | (12,7)(4) | |||
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1. Can use all port diameters up to maximum size listed.
2. CL125 FF flanged body only.
3.
4.
Installation
!Warning
• Personal injury, equipment damage, or
leakage due to escaping gas or
bursting of
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
(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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