Predictika · Process valve specifications

An AI sales agent's butterfly valve specification, checked before it goes out

An AI sales agent prepares a specification for a resilient-seated butterfly valve from a public technical datasheet, with a series, body style, size, seat, disc, shaft, operator and operating conditions. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the datasheet's published limits and returns a verdict, every reason and the figures it computed.

Scope: CRANE CENTER LINE butterfly valves, Series 200, 225 and 250 (2 to 24 inches): size, operator, Class 300 lug, dead-end service, seat temperature and pressure rating. See everything this validator covers

This validator models specifications for the CENTER LINE resilient-seated butterfly valves in the public CRANE ChemPharma & Energy technical datasheets, not just the scenarios shown below.

  • Series and body — Series 200, 225 and 250 in wafer, lug and (Series 225 only) ASME Class 300 lug bodies; the minimum and maximum sizes, lever handle limits (12 inches on Series 200, 6 inches on Series 225 and 250) and the Class 300 lug limit of 12 inches.
  • Materials — Buna-N and EPDM seats with the temperature range the datasheet lists (EPDM falls to 225 F from 18 inches), and the disc and shaft options each series offers.
  • Pressure and service — the datasheet pressure rating for the series and size, dead-end service (lug bodies), and a person confirming where the datasheet rating depends on a downstream flange above 100 F.

Any specification for these valves that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Crane does not publish list prices, so this validator produces no price build-up or line-item quote), Viton and PTFE seats, Series 210 and Series 800, Series 200 sizes above 24 inches, torque and actuator sizing, and Crane's other product lines.

The AI sales agentBuilds the valve specification from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

7 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
Click to expand
    
Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
Limits that change with valve sizeOnly with care
Handle limits, seat temperature limits and pressure ratings each switch at different sizes (6, 12, 16 and 18 inches), so the rules are a set of thresholds that must be kept in step by hand.		Series and size travel in one request and every size-dependent limit is applied on every call.
Options that exist on one series onlyOnly with care
Class 300 lug bodies, disc and shaft choices differ by series; each exclusion is a separate rule that must be written and maintained.		Series, body style, disc and shaft are checked together, so an option that the series does not offer is caught.
Dead-end service and pressure rating togetherOnly with workarounds
The rating depends on series, size and service, so it needs a lookup of its own, kept in step with the datasheet.		The rating is derived from series, size and service on every call and compared with the stated pressure.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the specification is saved or a step is completed, so a rep often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
Click to expand
    
Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1A 1 inch valve is below the 2 inch minimum size of the CENTER LINE butterfly valves.
2A 26 inch valve is above the 24 inch maximum size of the Series 225 and 250 butterfly valves.
3A 30 inch Series 200 valve is above the 24 inches this validator models; the datasheets list larger sizes but differ on the maximum.
4A lever handle is not offered above 12 inches for this series and the size is 14 inches; a gear operator or actuator is needed.
5A lever handle is not offered above 6 inches for this series and the size is 8 inches; a gear operator or actuator is needed.
6The operating pressure is 201 psi; the datasheet rating for this series, size and service is 200 psi.
7The operating pressure is 151 psi; the datasheet rating for this series, size and service is 150 psi.
8The operating pressure is 286 psi; the datasheet rating for this series, size and service is 285 psi.
9The ASME Class 300 lug bolt pattern is offered on the Series 225 only.
10The ASME Class 300 lug bolt pattern is offered only from 2 to 12 inches and the size is 14 inches.
11Dead-end service is a lug-body capability and the body style is wafer.
12The datasheets state the dead-end service ratings for the Series 200 and 225; they do not state them for the Series 250.
13The Series 250 disc options are 316 stainless steel, aluminum-bronze and Monel; a ductile iron disc is not listed.
14The Series 250 shaft options are 316 stainless steel, 17-4PH and Monel; a 416 stainless steel shaft is not listed.
15The operating temperature is 181 F; the selected seat is listed to 180 F at this size.
16The operating temperature is 5 F; the selected seat is listed from 10 F.
17The operating temperature is 226 F; the selected seat is listed to 225 F at this size.
18The operating temperature is -31 F; the selected seat is listed from -30 F.
19The Series 225 and 250 rating is stated at 100 F; above 100 F it depends on the downstream flange being installed, and the temperature is 150 F.

  

  

    
Scenarios and results
Click to expand
    
The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Class 300 lug valve for a cooling loop: A 14 inch Series 250 butterfly valve with a Class 300 lug body and a lever handle

    
The agent's request. Please quote a 14 inch CENTER LINE Series 250 butterfly valve, ASME Class 300 lug body, Buna-N seat, 316 stainless steel disc and 316 stainless steel shaft, with a lever handle, for 260 psi at 60 F. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Lever handle too large. A lever handle is not offered above 6 inches for this series and the size is 14 inches; a gear operator or actuator is needed.
    • 
      
  • Class 300 lug on the wrong series. The ASME Class 300 lug bolt pattern is offered on the Series 225 only.
    • 
      
  • Class 300 lug above 12 inches. The ASME Class 300 lug bolt pattern is offered only from 2 to 12 inches and the size is 14 inches.
    • 
    

    
2. Class 300 lug valve for a cooling loop: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 14 inch CENTER LINE Series 225 butterfly valve, ASME Class 300 lug body, Buna-N seat, ductile iron disc and 416 stainless steel shaft, with a manual gear operator, for 260 psi at 60 F. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Class 300 lug above 12 inches. The ASME Class 300 lug bolt pattern is offered only from 2 to 12 inches and the size is 14 inches.
    • 
    

    
3. Class 300 lug valve for a cooling loop: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 12 inch CENTER LINE Series 225 butterfly valve, ASME Class 300 lug body, Buna-N seat, ductile iron disc and 416 stainless steel shaft, with a manual gear operator, for 260 psi at 60 F. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Specification summary. CENTER LINE Series 225 butterfly valve, 12 inches, 60 F at 260 psi; datasheet rating for this series, size and service 285 psi.
    • 
    

    
4. Large valve for a hot water line: A 20 inch Series 200 butterfly valve with a lever handle at 250 F and 160 psi

    
The agent's request. Please quote a 20 inch CENTER LINE Series 200 butterfly valve, wafer body, EPDM seat, ductile iron disc and 416 stainless steel shaft, with a lever handle, for 160 psi at 250 F. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Lever handle too large. A lever handle is not offered above 12 inches for this series and the size is 20 inches; a gear operator or actuator is needed.
    • 
      
  • Too hot for the seat. The operating temperature is 250 F; the selected seat is listed to 225 F at this size.
    • 
      
  • Pressure above the valve rating. The operating pressure is 160 psi; the datasheet rating for this series, size and service is 150 psi.
    • 
    

    
5. Large valve for a hot water line: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 20 inch CENTER LINE Series 200 butterfly valve, wafer body, EPDM seat, ductile iron disc and 416 stainless steel shaft, with a manual gear operator, for 145 psi at 200 F. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Specification summary. CENTER LINE Series 200 butterfly valve, 20 inches, 200 F at 145 psi; datasheet rating for this series, size and service 150 psi.
    • 
    

    
6. Dead-end service: A wafer-body Series 200 valve with dead-end service and a Buna-N seat at 200 F

    
The agent's request. Please quote a 8 inch CENTER LINE Series 200 butterfly valve, wafer body with dead-end service, Buna-N seat, ductile iron disc and 416 stainless steel shaft, with a lever handle, for 190 psi at 200 F. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Dead-end service needs a lug body. Dead-end service is a lug-body capability and the body style is wafer.
    • 
      
  • Too hot for the seat. The operating temperature is 200 F; the selected seat is listed to 180 F at this size.
    • 
    

    
7. Dead-end service: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 8 inch CENTER LINE Series 200 butterfly valve, lug body with dead-end service, EPDM seat, ductile iron disc and 416 stainless steel shaft, with a lever handle, for 190 psi at 200 F. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Specification summary. CENTER LINE Series 200 butterfly valve, 8 inches, 200 F at 190 psi; datasheet rating for this series, size and service 200 psi.
    • 
    

  

  

    
Narration transcript
Click to expand
    
The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares a specification for a resilient-seated butterfly valve from a public technical datasheet, with a series, body style, size, seat, disc, shaft, operator and operating conditions. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the datasheet's published limits and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please quote a 14 inch CENTER LINE Series 250 butterfly valve, ASME Class 300 lug body, Buna-N seat, 316 stainless steel disc and 316 stainless steel shaft. It is ready to send. The rest of the request is on screen.
    4. 
      
  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with three findings, all in one answer. A lever handle is not offered above 6 inches for this series and the size is 14 inches; a gear operator or actuator is needed. The ASME Class 300 lug bolt pattern is offered on the Series 225 only. The ASME Class 300 lug bolt pattern is offered only from 2 to 12 inches and the size is 14 inches.
    6. 
      
  6. The validator returned three blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
    7. 
      
  7. What this shows: for options that exist on one series only, a rules-based CPQ is error-prone for this.
    8. 
      
  8. Now the agent resubmits.
    9. 
      
  9. The corrected request. It changes the series to Series 225, the disc to ductile iron, the shaft to 416 stainless steel and the operator to manual gear operator.
    10. 
      
  10. It calls the validator again.
    11. 
      
  11. Still blocked, with one finding, all in one answer. The ASME Class 300 lug bolt pattern is offered only from 2 to 12 inches and the size is 14 inches.
    12. 
      
  12. Two findings cleared; still blocked on class 300 lug above 12 inches.
    13. 
      
  13. The agent resubmits once more.
    14. 
      
  14. The revised request. It changes the size to 12 inches.
    15. 
      
  15. It calls the validator once more.
    16. 
      
  16. This time the validator clears it.
    17. 
      
  17. The earlier finding is cleared.
    18. 
      
  18. Three problems caught in one call, fixed in two passes, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer.
    19.