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Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES
InstallatIon and MaIntenance InstructIons
Before installation these instructions must be read fully and understood
Table of ConTenTs
1 Introduction ��������������������������������������������������� 4
2 Storage and handling ������������������������������������ 4
3 Installation ����������������������������������������������������� 4
4 Hydrostatic pressure tests ��������������������������� 5
5 Setting, testing and adjustments ����������������� 6
6 Valve maintenance �������������������������������������� 10
7 Style variations �������������������������������������������� 21
8 Service records �������������������������������������������� 21
9 Spare parts �������������������������������������������������� 21
programs ����������������������������������������������������� 22
emerson.com/finalControl
aTTenTion
The safety of lives and property often depends on
the proper operation of the pressure relief valves.
Consequently, the valves should be kept clean and
should be tested and reconditioned periodically to
make sure they function properly.
Warning
Suitability of the material and product for
the use contemplated by the buyer is the
sole responsibility of the buyer. Also storage,
installation and proper use and application
are the sole responsibility of the purchaser.
Emerson disclaims any and all liability arising out
of the same.
Any installation, maintenance, adjustment,
repair and testing performed on pressure
relief valves should be done in accordance with
the requirements of all applicable codes and
standards under which those performing such
work should maintain proper authorization
through appropriate governing authorities.
No repair, assembly and test work done by
other than Emerson shall be covered by the
warranty extended by Emerson to its customers.
You assume full responsibility for your work. In
maintaining and repairing Crosby products you
should use only parts manufactured by Emerson.
Call your nearest Emerson regional sales office or
representative for a service engineer should you
wish assistance with your field needs.
© 2017 Emerson� all Rights Reserved�
Engineering Doc� #IS-V3137B
VCioM-06208-en 18/02
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Summary of Contents for Emerson Crosby JOS-E Series
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Page 1: Table Of Contents
No repair, assembly and test work done by Table of ConTenTs other than Emerson shall be covered by the warranty extended by Emerson to its customers. 1 Introduction ��������������������������������������������������� 4 You assume full responsibility for your work. In 2 Storage and handling ������������������������������������... - Page 2 Emerson recommends that sufficient inventory of spare parts be maintained to 2� Repair spare parts: valve parts exposed to wear and/or corrosion during normal support process requirements� always be sure to use genuine Emerson parts operation�...
- Page 3 • Never stand in front of the discharge outlet Proper handling, storage, installation, of any Emerson product by a non Emerson of a pressure relief valve which is under maintenance and operation is essential to the employee may void any Emerson guarantees or pressure�...
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Page 4: Introduction
Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons 1 inTroduCTion 3.2 inspection Pressure relief valves should be inspected Crosby Style JOS-E/JBS-E pressure relief visually before they are installed to ensure that no damage has occurred during shipment or valves have been selected for installation because of their performance features, while in storage�... -
Page 5: Hydrostatic Pressure Tests
Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons 4 hydrosTaTiC Pressure TesTs Discharge pipe 4.1 hydrostatic test of vessel or system When a pressure vessel or system is to be hydrostatically tested, it is recommended that the pressure relief valve be removed and a blank flange be installed in its place�... -
Page 6: Setting, Testing And Adjustments
Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons 5 seTTing, TesTing and adJusTMenTs 5.2 reconditioned valves Valves which have not been in service for 5.1 new valves extended periods due to plant shutdown or long term storage, or valves which have been Every new Crosby J series pressure relief valve is tested fully and sealed prior to shipment�... - Page 7 5.8.6 Opening pressure tolerance shall comply with aSME Section VIII Division 1 ug-136 and two fitted spring washers� The new spring and washers must be obtained from Emerson (d) (1) as below or other tolerance may be used so long as they meet aSME and the valve must be reset and the nameplate restamped by an authorized valve repair facility�...
- Page 8 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons Table 2 Table 3 JlT-e orifice size nozzle ring setting - Total revolutions below highest lock position operating temperature (°f) % excess pressure P and Q ¾ Revolution 0 - 150 (-18-65°C) R and T 1 Revolution 151 - 600 (66-315°C)
- Page 9 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons FIguRE 4 FIguRE 5 Typical test arrangement Seat leak apparatus for 150 and 300 lb� outlets 1” to 10” sizes noTe The cover plate should be fitted with a suitable device to relieve body pressure in case of accidental popping of valve Tube...
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Page 10: Valve Maintenance
Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons all of the test fluid passing through an 6.2.2 Remove the nozzle ring set screw (4) assembled valve is collected and measured per and set screw gasket (27)� Record the following test procedure: the position of the nozzle ring (3) with 1�... - Page 11 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons FIguRE 8 • Orifice sizes D through K (O-ring seats) Bellows The O-ring seat design for orifice sizes D through K has a retaining screw in Tailpiece the center of the disc insert� a drilled Disc holder and tapped hole (4-40 uNC) is provided Tailpiece...
- Page 12 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons 6.4 inspection that the seats are kept perfectly flat� Check all valve parts for wear and corrosion� If considerable lapping is required, spread The valve seats on both the nozzle and disc a thin coat of medium coarse lapping insert must be examined to determine if they compound on the block�...
- Page 13 Figure 10 recommended that the valve be returned and Table 8� Remove only enough metal Raised seal face to a Emerson facility for repair� all to restore the surface to its original Minimum parts must be machined accurately per condition�...
- Page 14 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons 6.6 assembly 6.6.7 While holding the top of the disc holder, FIguRE 12 all components should be clean� Before install the guide into the body� align the Recommended lubrication points assembling the following parts, lubricate with hole of the guide with the body outlet�...
- Page 15 Restricted lift (Rl) versions of the J series may tolerance (�020”, +0�020” [-0�50 mm, regarding nameplates should be followed� be built by a certified Emerson manufacturing +0�50 mm])� • The information on the original ASME facility or by an aSME certified assembler with •...
- Page 16 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons Table 10- Jos/Jbs resTriCTed lifT ss316 sPaCer / J_s-rl ss316 sPaCer Part number height (inches) Part number height (inches) Part number height (inches) Part number height (inches) orifice 30% of full capacity 40% of full capacity 50% of full capacity 60% of full capacity...
- Page 17 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons Table 11 - JlT resTriCTed lifT ss316 sPaCer / JlT-J_s-rl ss316 sPaCer Part number height (inches) Part number height (inches) Part number height (inches) 40% of full capacity 50% of full capacity 60% of full capacity orifice D 1-4()
- Page 18 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons examples Valve model number: Size and orifice: 6 Q 8 Set pressure: 600 psig Back pressure: 100 psig Operating temperature: 350 °F Design temperature: 450 °F Outlet temperature: 100 °F Body/bonnet material: Carbon steel Full lift:...
- Page 19 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons 6.8 assembly of cap and lifting lever devices Install the lifting gear assembly onto the bonnet and secure it with cap studs and nuts� Styles JOS-E, JBS-E and JlT-E pressure relief valves are furnished with several different For Type D lifting levers that have two part caps (cap and cap top) the above procedure...
- Page 20 Crosby STylE JOS-E, JBS-E, JlT*-JBS-E, JlT*-JOS-E ValVES InstallatIon and MaIntenance InstructIons FIguRE 14 - Cap and lifting levers Dog shaft lever nut lever nut lockwasher Packing gland sleeve Spindle Packing gland nut lever Packing Packing gland Dog shaft gasket Seal and wire Cap plug Test rod Cap gasket...
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Page 21: Style Variations
On the valve nameplate, the valve assembly number is shown as shop number� Spare parts may be ordered from any Emerson regional sales office or representative�... -
Page 22: Emerson' Field Services And Repair
Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user� Crosby is a mark owned by one of the companies in the Emerson automation Solutions business unit of Emerson Electric Co� Emerson automation Solutions, Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co�...