Emerson Fisher Type 289P Instruction Manual
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Emerson Fisher Type 289P Instruction Manual

Pilot-operated relief valve
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Instruction Manual
Form 5481
February 2009
Type 289P Pilot-Operated Relief Valve
W6834
Figure 1. NPS 1 Type 289P Pilot-Operated Relief Valve
Introduction
Scope of Manual
This manual describes and provides instructions
and parts lists for the Type 289P pilot-operated relief
valve. Instructions and parts lists for any other Fisher
equipment used with this relief valve will be found in
separate manuals.

Product Description

The Type 289P pilot-operated relief valve is used to
provide protection from overpressuring a downstream
system. This relief valve is suitable for service on
natural gas, air, propane, or any other operating
medium not corrosive to the internal parts. Smooth
W3167-2
Figure 2. NPS 2 Type 289P Pilot-Operated Relief Valve
opening action minimizes system pressure surges
during emergency action. Very little build-up over set
pressure is required to completely open the main valve
®
for maximum relief capacity. The external control line
provides quick, accurate pressure registration.

Specifications

Some of the specifications for a given relief valve as
it comes from the factory appear on the nameplate
attached to the Type 289P main valve spring case.
Other specifications appear on the Type 6358B or
6365 pilot spring case.
www.emersonprocess.com/regulators
Type 289P

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Summary of Contents for Emerson Fisher Type 289P

  • Page 1: Specifications

    Type 289P Instruction Manual Form 5481 February 2009 Type 289P Pilot-Operated Relief Valve W6834 W3167-2 Figure 1. NPS 1 Type 289P Pilot-Operated Relief Valve Figure 2. NPS 2 Type 289P Pilot-Operated Relief Valve Introduction Scope of Manual opening action minimizes system pressure surges This manual describes and provides instructions during emergency action.

  • Page 2: Installation

    Type 289P Specifications Body Size and End Connection Style Pressure Registration NPS 1 or 2, NPT External Maximum Relief (Inlet) Pressure Pilot Control Line and Vent Connections (1)(2) nPS 1: 50 psig (3,4 bar) over relief set 1/4 NPT pressure or 110 psig (7,6 bar) whichever is lower Relief Valve Temperature Capabilities nPS 2: 15 psig (1,0 bar) With nitrile (nBR): -20°...
  • Page 3 Type 289P hOLLOW PaSSagE DIaPhRagM In VaLVE PLug STEM aSSEMBLy uPPER PORTIOn OF VaLVE PLug FIxED RESTRICTIOn TO MaIn VaLVE DIaPhRagM LOWER PORTIOn OF VaLVE PLug TO ExhauST PORT ExPanDED VIEW OF ThE TyPE 6358B DIaPhRagM aSSEMBLy anD VaLVE PLug (FOR uSE WITh nPS 1 anD 2 BODy SIzES) InLET (COnTROLLED) PRESSuRE LOaDIng PRESSuRE...

  • Page 4: Startup And Shutdown

    Type 289P Table 1. Relief Set Pressure Ranges and Pilot Control Spring Infromation PILOT COnTROL SPRIng InFORMaTIOn MaIn VaLVE PILOT RELIEF SET BODy SIzE, Wire Diameter, Free Length, TyPE PRESSuRE RangE Part number Color Inches (mm) Inches (mm) 10 to 18 psig (0,69 to 1,2 bar) 1B986027212 Green...
  • Page 5 Type 289P Table 2. NPS 1 Main Valve Capacities and Type 6358B Pilot Information BuILD-uP OVER BuILD-uP OVER PRESSuRE DROP MaIn VaLVE SPRIng, SET PRESSuRE SET PRESSuRE SET PRESSuRE TO SET PRESSuRE BELOW SET PRESSuRE PaRT nuMBER, anD RangE, PSIg (bar) BEgIn OPEnIng MaIn TO FuLLy OPEn MaIn TO RESEaT PILOT,...
  • Page 6 Type 289P Assembly 5. Inspect the parts removed in step 4. If part replacement is necessary, unscrew the hex nut 1. Replace the O-ring (key 37). Slide the lower O-ring (key 11), and separate the parts one piece at a time. (key 30), O-ring washer (key 22), O-ring (key 20), 6.
  • Page 7 Type 289P Type 6358B Pilot note In step 7, if installing a control spring of Key numbers are referenced in Figure 6. The pilot may a different set pressure range, be sure remain on the pipe nipple (key 29) during maintenance. to remove the set pressure range on the Disassembly spring case and indicate the new range.

  • Page 8: Parts Ordering

    Type 289P 2. Install the plug/stem guide (key 9) if it was removed. Description Part number 3. Install the restriction plug (key 20) if it was removed. Diaphragm Head, Aluminum 1D666428982 Spring Seat, Cadmium plated steel 1D667125072 4. If removed, install the plug/stem assembly (key 4) Diaphragm, Nitrile (NBR) 24B5622X012 Adjusting Screw, Steel...
  • Page 9 Type 289P aS - anTI SEIzE LS - LEaD SEaL PaRTS nOT ShOWn: 29 14A8406-D Figure 4. NPS 1 Type 289P Main Valve Assembly 26A0323-G Figure 5. NPS 2 Type 289P Main Valve Assembly...
  • Page 10 Type 289P B2619-1 A6920 TyPE 6358B PILOT InTERIOR VIEW TyPE 6358B PILOT ExTERIOR VIEW Figure 6. Type 6358B Pilot Assembly Type 6358B Pilot (Figure 6) Description Part number Description Part number Parts Kit (includes keys 4, 5, 13, 14, Spring Seat, Zinc-plated steel 1B798525062 19, 36, and 37) R6358X00012...
  • Page 11 Type 289P TyPE 6365 PILOT InTERIOR VIEW TyPE 6365 PILOT ExTERIOR VIEW Figure 7. Type 6365 Pilot Assembly Type 6365 Pilot (Figure 7) Description Part number Description Part number Parts Kits (included are keys 4, 5, 13, Plug/Stem Guide, Stainless steel 16A2923X012 14, 19, and 36) Adjusting Screw, Plated steel...
  • Page 12 For further information visit www.emersonprocess.com/regulators The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls, Inc., a business of Emerson Process Management.

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Fisher 289p

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