P99 Pressure Reducing Regulator

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P99 Pressure Reducing Regulator

Product catalog summary

Applications

City/District gate operation
Commercial buildings
Boilers, furnace, oven
Plant air service

Features

Five pilot choices for low to extra high pressure
Inlet pressure up to 1,000 psi with P39 reducing regulator
Loading pressure bleeds downstream without atmospheric relief

Operations

Double diaphragm pilot for quick response and high accuracy
Pilot assemblies can be exchanged for different pressure ranges
Seat selections include elastomer seat disk or O-ring against orifice
O-ring against flat orifice recommended for 250 psi and above

P99 Pressure Reducing Regulator Specifications

Body: Ductile Iron/WCB Steel
Spring Case: Ductile Iron
Diaphragm: Nitrile
Orifices: Stainless Steel/Brass
Temperature Ratings: Nitrile, Neoprene –20˚ to 180˚F; Fluorocarbon 0 to 300°F
Weight: Approx. 115 lbs. (52.2 kg)

P99 Maximum Inlet, Pressure Drop and Differential Pressures

Max allowable inlet pressure ranges from 25 to 1000 PSIG
Recommended disk materials include Nitrile, Neoprene, Fluorocarbon, and Nylon

P99 Capacities

Capacities are provided in SCFH/Nm3/h for various inlet and outlet pressures
Orifice sizes range from 1/2" to 1-1/8"

Pilot Versions and Pressure Ranges

LD, L, LE, H, HP versions with varying pressure ranges
Max pilot pressure ranges from 160 to 600 PSIG

Construction and Materials

Body and casings made of ductile iron
Springs made of steel
Tubing available in copper or stainless steel

Rebuild Kits

Include components like Nitrile seat disk assembly, diaphragm, gaskets, and orifices

Specifications
The document outlines the specifications for the P99 regulator series, which requires a minimum differential pressure of 0.75 PSIG / 0.05 bar for operation. The shaded areas in the diagrams indicate regions where there is no capacity due to this differential pressure requirement.

Dimensions
The document provides detailed dimensions for various configurations of the P99 regulator, including NPT and flanged connections. Key dimensions are provided for different parts of the regulator, such as the control connection and rainproof vent.

Monitor Setup
The P99 can be configured as a monitor regulator to provide overpressure protection. It includes a modified lower casing with an O-ring seal. The setup requires the monitor regulator to be placed either upstream or downstream, with additional piping needed. During normal operation, the monitor regulator remains open and takes over if the main regulator fails.

Parts List
The document includes a comprehensive parts list for the P99 regulator with L and H series pilots. Each part is listed with its description, quantity, and part number. This includes components like the spring case, diaphragm rod, main springs, and various gaskets and seals.

Repair Kits
Parts included in repair kits are specified, indicating which components are available for maintenance and repair purposes.

Key Components
Highlighted components include the main spring, diaphragm rod, valve carrier, and various orifice assemblies. The document also details the materials used, such as brass and stainless steel, for different parts.

Catalog excerpts

P99 Pressure Reducing Regulator Applications • City / District gate operation • Commercial buildings • Boilers, furnace, oven • Plant air service • 5 Pilot choices for low to extra high pressure • Up to 1,000 psi inlet when fitted with a P39 reducing regulator • Loading pressure bleeds downstream - no atmospheric relief Operations • Double diaphragm pilot providing quick response and high accuracy requires less droop than a direct operated regulator to obtain the same pressure difference. • Pilots assemblies can be exchanged in the field from high to low pressure. • Seat selections include an elastomer seat disk against a sharp edge orifice or an elastomer O-ring against a flat orifice. • The O-ring against a flat orifice should be used in all applications with 250 psi and above inlet pressure and when heavy main springs are used. P99 Maximum Inlet, Pressure Drop and Differential Pressures Note: When choosing an O-ring seat and flat orifice, only the 7/8” and 1-1/8” orifi

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Output Pressure Ranges 3 - 12” WC (LD) .25 - 2 PSIG (L) .25 - 2 PSIG (LD) .25 - 2 PSIG (LE) 5 PSIG (L) 5 PSIG (LD) 5 PSIG (LE) 10 PSIG (L) 10 PSIG (LD) 10 PSIG (LE) 15 PSIG (L) 15 PSIG (LD) 15 PSIG (LE) - 20 PSIG (L) - 20 PSIG (LD) - 20 PSIG (LE) - 65 PSIG (H) - 100 PSIG (HP) Special Construction 2" NPT - IRON 2" NPT - STEEL 150 RF - STEEL 300 RF - STEEL Versions Standard Monitor Versions Standard w/P39 installed Monitor w/P39 installed Required on Pilot Pressure > 150 PSIG P99 Regulator Rebuild Kits Kit Includes: Nitrile seat disk assembly, Diaphragm, Pusher post gasket, Body gasket, Orifice,...

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P99 Outlet Pressure Ranges

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Capacities in Thousands of SCFH / Nm3/h of 0.6 Specific Gravity Natural Gas121 Outlet Pressure, PSIG (BAR) 1. When sizing a regulator, always use the lowest inlet pressure, the highest outlet pressure, and the maximum capacity desired. 2. Requires 0.75 PSIG / 0.05 bar minimum differential pressure construction. - Shaded areas indicate no capacity due to differential pressure requirement.

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P99 Capacities of Type 99 Regulators (Full Capacity) Orifice Size Inches mm PSIG BAR SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h

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P99 HP Pilot with P39 & Relief Valve 6.913

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DOWNSTREAM REGULATOR UPSTREAM REGULATOR (REQUIRES O-RING STEM SEAL) MONITOR REGULATOR MAY BE PLACED EITHER UPSTREAM OR DOWNSTREAM. REQUIRES ADDITIONAL PIPING P99 WIDE-OPEN MONITOR INSTALLATIONS Monitoring Systems A monitor unit can serve as overpressure protection in the case of a wide-open failure of the main regulator. A P99 that is configured as a monitor regulator has a modified lower casing that includes an O-ring seal around the valve carrier. The system should be set up as seen above with the O-ring seal unit upstream. The control line of the upstream regulator must be installed downstream...

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