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Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product. 

Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Clarkson 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. All other marks are the property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed 

as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and 

conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

Emerson.com/FinalControl

CYLINDER OPERATED VALVES

Equipment orientation

The preferred orientation for optimum protection 
is with the cylinder in the vertical position. This 
position gives the best support to the cylinder 
rod and helps reduces the chance of a “flat spot” 
developing on the cylinder seals. An acceptable 
alternate position for valves with cylinder 
diameters of less than 6 inches (150 mm) is with 
the cylinder in the horizontal position. 

Preparation for storage

Valves may be stored as shipped, provided 
the storage facility and equipment orientation 
instructions above are followed. If valve 
packaging is altered or removed for receiving 
inspection, repackage valve as originally 
received. Standard packaging materials cannot 
be considered sufficient for outdoor storage.

Cylinder storage

These cylinder storage instructions are not 
intended to replace the instructions of the 
specific cylinder manufacturer and are to be 
used as a guide only. If specific instructions 
are required, please contact our office. For 
storage of up to 3 years; Squirt a high quality 
grade of hydraulic oil or synthetic lubricant into 

the cylinder ports and operate cylinder 6-12 
times on a yearly basis. For storage 3-5 years; 
Lubricate as above. Additionally, extend cylinder 
rod until the valve is fully closed. Coat cylinder 
rod with high quality heavy grease or synthetic 
lubricant. Retract cylinder rod until valve is fully 
open, drawing lubricant into rod end of cylinder. 
Securely plug cylinder ports with pipe plugs, if 
cylinder is not prepiped to control accessories. 
If cylinder is prepiped to accessories, plug all 
input and output ports of accessories.

Storage inspection

Visual inspection shall be performed on a semi-
annual basis and results recorded. Inspection as 
a minimum shall include reviewing the following:
• Packaging
• Flange covers
• Dryness
• Cleanliness

Maintenance

Maintenance shall consist of correcting 
deficiencies noted during inspection. 
All maintenance shall be recorded. 
Contact factory prior to performing any 
maintenance if valve is still covered under 
warranty.

CLARKSON

 KNIFE GATE VALVE MODEL ZP3OO

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Summary of Contents for Clarkson ZP300

Page 1: ...ial Seat material URET Packing material Packing material TPE GR COMPLIANCE LABEL 3 Mating line flanges must be properly aligned Slip on or weld flanges can be used Never try to make up for misaligned pipe flanges by the line bolting 4 Flange fasteners should be tightened in a uniform manner using a cross pattern to prevent distortion of the valve 5 Pipe supports and or expansion joints should be u...

Page 2: ...s are design to suit flanges compliant to ASME B16 5 and B16 47 and gaskets designed to ASME VIII 1 Appendix 2 and ASME B16 20 and B16 21 Torque on Flange bolt should not exceed values shown in Table 1 TABLE 1 MAXIMUM TORQUE ON FLANGE BOLT STUD Valve size NPS Bolt size Torque ft lb Recommended bolt length in Recommended stud length in INITIAL INSPECTION NOTES 1 Maximum torque should not be exceede...

Page 3: ...cylinder design and mounting arrangement HYDRAULIC CYLINDER SIZE AND REQUIRED FLOW RATE Valve size NPS HC size Rod size Fluid flow rate in 3 sec 1 in s Max close 1 in s Max open WARNING To minimize stress concentration in flow ring ensure flange gasket ID is matched with flow ring ID as shown in Figure 2 GASKET DETAIL FIGURE 2 Gasket Gasket ID matched to flow ring ID Flow ring with overlay HYDRAUL...

Page 4: ...tor 6 Electric motor actuated valves should be left in their factory set condition unless the system operating parameters dictate a change If changes are necessary they should be performed in small increments using the lightest lowest setting possible to achieve the desired performance and then the valve actuator function inspected Excess torque and or thrust in the motor settings may damage or lo...

Page 5: ...essive corrosion bitumen build up tears in rod boot etc Check rod boot connections Check for cylinder rod seal blow by FIGURE 11 Major components Cast body Polymer liner UHMPW PE Polyurethane seat Body O ring 17 4PH gate Packing gland Packing Gate scraper Flow ring Flow ring O ring 2 Packing gland check for leaks or worn packing If leakage is occurring around the packing gland tighten the packing ...

Page 6: ... compressed to obtain an elongated smaller piece Note not all sizes have smaller end pieces some will have equal size end pieces 6 Install packing gland with studs Bellville Washers and nuts as shown in Figure 17 For initial tightening of packing gland tighten packing gland to achieve a compression between 0 125 0 375 Use Loctite 262 Red on studs to secure in body Note ensure each stack is facing ...

Page 7: ...27 000 16 2 78 16 2 76 24 50 27 630 16 2 78 8 2 76 25 00 28 000 8 2 78 16 2 76 28 4 25 00 26 50 30 000 24 3 00 27 00 30 130 8 3 00 16 2 95 30 4 27 00 1 32 000 1 8 3 22 24 2 95 28 50 1 32 500 1 16 3 22 29 00 1 32 750 24 3 22 32 4 29 00 1 34 500 1 24 3 41 1 31 00 1 35 380 1 8 3 41 16 3 41 36 4 33 00 1 38 500 3x1 24 3 68 34 50 1 39 000 1 16 3 68 8 3 68 35 00 1 39 375 1 8 3 68 16 3 68 42 4 38 50 1 44 ...

Page 8: ...NTING Cylinders may require additional support when mounted other than in vertical position Failure to do so could lead to premature failure of cylinder and or valve The following illustrations are suggestions specific details will have to be determined by customer so support best suits surrounding area It is important that the cylinder gate alignment be maintained during valve operation Supports ...

Page 9: ...zontal position Preparation for storage Valves may be stored as shipped provided the storage facility and equipment orientation instructions above are followed If valve packaging is altered or removed for receiving inspection repackage valve as originally received Standard packaging materials cannot be considered sufficient for outdoor storage Cylinder storage These cylinder storage instructions a...

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