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ChemVlvGuide

ChemVlvGuide

Product catalog summary

Product Overview
This document provides a comprehensive guide on PVC and CPVC Tru-Bloc® Ball Valves, focusing on True Union Models D and C, and Chemtrol® ball valves. These valves are designed for nominal sizes from 1/2" to 6" and are known for their durability and ease of replacement without altering piping length.

Key Features

Consistent body length and thread design for easy replacement.
Pressure rating of 250 psi at 73°F for Model D, with improved ratings at higher temperatures.
Automatic seat wear adjustment with an energizer O-ring.
Full-port design minimizes flow restriction and pressure drop.
Manufactured without exposure to silicone compounds.
Distinctive orange handle for easy operation and flow direction indication.

Model Evolution
The evolution from Model A to D includes improvements like the Tru-Bloc safety feature and enhanced pressure ratings.

Bleach Ball Valves
Introduces the Chemtrol® Bleach Ball Valve to address sodium hypochlorite challenges, designed to vent out-gassing and prevent structural failures.

Specifications and Recommendations

Valves should be True Union type with automatic seat adjustment.
Proper assembly and packaging with clear labeling for bleach applications.
Valves must be marked with flow and vent directions for safety.

Warnings
Critical warning against using these valves with compressed air or other gases to prevent personal injury or property damage.

Materials and Specifications

Black Polypropylene: Contains 2.5% carbon black for UV protection, suitable for outdoor use.
Chem-Pure® Polypropylene: Made from pure propylene, ideal for high purity chemicals or DI water.
Kynar® (PVDF): Resistant to UV degradation, suitable for ultra-high purity water and chemical services.

Design Features

Consistent body length and thread design for easy replacement.
Model C design ensures no leakage and automatic adjustment for seat wear.
Full port design minimizes flow restriction and pressure drop.
Distinctive handle colors and markings for easy operation and flow direction indication.

Valve Types and Applications

True Union Multiport Valve: 3-Way/3-Position for flow direction and on-off control.
True Union Diverter Valve: 3-Way/2-Position for flow diversion without shut-off.

Installation and Maintenance

Proper installation and adjustment instructions to ensure leak-free operation.
Maintenance guidance includes depressurizing and draining the system before repairs.

Technical Data
Includes dimensions, weights, and flow coefficients for various valve sizes, emphasizing the importance of selecting the right valve for specific applications.

Safety Warning
Repeated warnings against using the products with compressed air or gases to prevent personal injury or property damage.

Procedures

Disassembly involves using a Chemtrol spanner wrench to remove the seat-carrier or retaining ring.
Installation requires careful handling of union-end connections, ensuring proper alignment and avoiding overtightening.
Specific joining techniques are outlined for threaded, socket, and flanged end valves.

Recommendations

Valve repair should be performed by qualified personnel, and replacement parts should be selected based on proper valve identification.
Use appropriate tools for heat fusion joining of PP or PVDF valves.
Ensure O-rings are clean and properly seated to prevent leaks.

Tables and Data

Dimensions, weights, and quantities for various valve sizes are provided, along with Cv values for flow rates.
Material lists specify components for both ball and butterfly valves, including construction materials and part specifications.

Installation Instructions for Chemtrol® Butterfly Valves

Butterfly valves are installed between two pipe flanges and can be mounted in any position.
Ensure rotational clearance with the pipe before installation and avoid installing blind flanges directly to the valve.
Alignment is crucial; excessive misalignment can affect the flange face-seals.
Use elastomeric seat end flaps or O-rings as face-seals; additional gaskets are not needed.
During installation, partially open the valve to avoid disk damage and use appropriate lubricants for sealing surfaces.
Bolts should be tightened progressively and equally in a diametrically opposed pattern using a torque wrench.

Maintenance Instructions

Minimal maintenance is required due to the valve's design and materials.
If leaks occur, check the compatibility of elastomeric seats and seals with the fluid medium.
For Model B valves, disassembly involves removing the top-works and separating the body halves to inspect and replace worn parts.
Model C valves cannot be disassembled; only handle assembly and O-ring face-seals can be replaced.

Product Guide for Ball Check Valves

Ball check valves are available in various materials including PVC, CPVC, PP, and PVDF.
True Union connections allow for easy removal without disrupting piping.
Valves can be converted for air or gas venting by replacing the standard ball with a floater ball.
Installation should be at least four feet from the pump discharge to avoid damage from turbulent flow.
Valves can be installed vertically or horizontally, but must follow the flow direction indicated by the molded-in arrow.

Flange Joining Instructions
Specific instructions for joining flanges are provided, emphasizing not to overtighten flanges to avoid damage.

Valve Cartridge Installation
After curing, end connections can be joined to the valve cartridge. Ensure O-rings are clean and properly seated before assembly. Union nuts should be hand-tightened.

Foot Valve Conversion
Foot valve screen housing assemblies can convert ball check valves to foot valves, typically installed in open tanks or sumps to prevent debris from entering pumps.

Vent Valve Conversion
To vent air or gas, replace the standard ball with a polypropylene ball that floats in water. The vent valve must be installed in an inverted vertical position. Ensure the floater ball is chemically resistant to the medium.

Adjustment
Union nuts should be tightened enough to prevent leaks at O-ring face seals. A strap-wrench may be used if necessary, but overtightening should be avoided.

Maintenance
For valve repair, depressurize and drain the system. Disassemble the valve cartridge and replace any damaged parts. Qualified personnel should perform repairs.

Valve Seat
The seal between the ball and body seat is maintained by an O-ring in the body seat groove.

Globe Valves
Chemtrol Globe Valves come in angle and Y-pattern styles, with interchangeable components. The Y-pattern offers minimal pressure drop, while the angle valve is used for higher pressure-drop applications.

Installation and Maintenance
Threaded end valves should not be overtightened. For maintenance, disassemble the valve as needed and replace worn parts. Ensure proper reassembly to prevent leaks.

Lab Valves
Chemtrol Chemcock and Calibrated Needle Valves are designed for precise flow control in laboratory settings. Installation requires careful attention to flow direction and proper tightening of connections.

Disassembly and Reassembly Procedures for Needle Valve

Disassembly: Rotate the knob to the full open position, remove the Phillips head screw, and detach the knob by turning counter-clockwise while pulling away from the body. Remove the snap ring and pull the stem firmly.
Reassembly: Insert the stem into the opening, press to full-closed position, replace the snap ring, pull the stem to full-open position, align and attach the knob, engage threads by turning clockwise, insert and tighten the screw, and test for free rotation.

Replacement Parts
A complete list is available on the preceding page. Consult the Chemtrol Chemical Resistance Guide for suitability.

Warnings
Do not use or test products with compressed air or gases. Failure to follow instructions can result in injury or damage.

Actuator Mounting Data

Chemtrol® valves can be adapted to various actuator brands using modular mounting kits. The kits include fastener hardware and drive couplings for field assembly.
Mounting platforms are designed for flexibility with slotted holes and adjustable heights.

Valve Specifications

Detailed dimensions and torque requirements for various valve sizes are provided, including Tru-Bloc Ball Valve and Butterfly Valve specifications.

Valve Accessories

Standoff Stem Extensions: Made of solid PVC, available in various lengths for handle clearance.
Alternative Manual Operators: Include 2" Square Nut Stem Adapter and Round Safety Handle to prevent accidental operation.
Valve Lockout Devices: Kits available for locking valves in specific positions, ensuring safety and compliance with OSHA standards.

Safety Notice
All products must not be used with compressed air or gases to prevent injury or damage.

Standards Overview
Various standards are crucial for designing plastic piping systems, with ASTM standards being the most frequently referenced. These standards form the basis for specifications in industrial plastic piping.

ASTM D1784: Covers rigid PVC and CPVC compounds for general use, including pressure and non-pressure applications.
ASTM D1785 and F441: Specify quality and dimensions for Schedule 40, 80, and 120 PVC and CPVC pressure pipes.
ASTM D2466: Covers Schedule 40 PVC threaded and socket pressure fittings.
ASTM D2467 and F439: Cover Schedule 80 PVC and CPVC Socket Type and Threaded Pressure Fittings.
ASTM D2564 and F493: Set requirements for PVC and CPVC Solvent Cement.
ASTM F656: Covers primers for PVC pipe and fittings joined by solvent cements.
ASTM F1970: Covers special engineered fittings for PVC or CPVC systems.
ASTM F1498: Adapts pipe thread specifications for plastic pipe and fittings.
ASTM D2855: Describes the procedure for solvent cementing PVC pipe and fittings.
ASTM D4101: Covers polypropylene materials for injection molding and extrusion.
ASTM D1598: Covers the determination of time-to-failure under constant internal pressure.
ASTM D2837: Describes obtaining the Hydrostatic Design Basis for thermoplastic pipe materials.
ASTM D2657: Covers heat-fusion bonding of polyolefin materials.
ASTM D3222: Covers PVDF Fluoroplastic Materials for molding and extrusion.

Other Standards

ASME B1.20.1: Details dimensions and tolerance for tapered pipe threads.
ASME B16.5: Sets standards for bolt holes and dimensions for steel flanges.
NSF/ANSI 14: Applies to thermoplastic and thermoset plastic piping system components.
NSF/ANSI 61: Establishes health effects requirements for chemical contaminants in drinking water systems.

Technical Service
Technical assistance is available through the Technical Information Hotline.

Valve Pressure-Loss Calculations
Fluid flow coefficients (Cv values) are provided for Chemtrol valves to aid in system design. The pressure drop across a valve can be calculated using the formula: P = (Q² x S.G.) / Cv², where P is the pressure drop, Q is the flow rate, S.G. is the specific gravity, and Cv is the fluid flow coefficient.

Chemtrol Valve Construction and Performance Standards
Chemtrol valves are known for setting industry standards in plastic valves. Key points include:

100% testing for seat and shell leaks.
Conformance to ASTM and ANSI standards for dimensional and material requirements.
NSF listing for compliance with health and safety standards.

Product Specifications

250 PSI Tru-Bloc® Valves: Designed for industrial, commercial, and residential systems with specific temperature and pressure ratings.
150 PSI Tru-Bloc® Valves: Specifications for larger nominal sizes with material and performance requirements.

Product Line and Applications
The catalog details various products including large diameter valves, specialty valves, and fittings suitable for chemical processing, industrial plating, chilled water distribution, and irrigation systems. The materials used include Polyvinyl Chloride (PVC), Chlorinated Polyvinyl Chloride (Corzan® CPVC), Black and Natural Polypropylene, and Polyvinylidene Fluoride (KYNAR® PVDF).

Joining Methods and Temperature Limits
Products can be joined using solvent cementing, threading, flanging, or socket heat fusion. The maximum service temperatures vary by material: PVC up to 140°F (60°C), CPVC up to 210°F (99°C), and KYNAR® PVDF up to 280°F (138°C).

Warnings
The document emphasizes not using or testing the products with compressed air or other gases due to the risk of personal injury or property damage.

Warranty
Chemtrol offers a one-year limited warranty on its pressure-rated pipes, valves, and fittings, covering defects in materials and workmanship under normal use. The warranty excludes incidental and consequential damages.

Ordering and Technical Support
Products are sold through select distributors knowledgeable in plastic applications. Technical support is available for product suitability, installation specifications, and training.

Contact Information
NIBCO INC. provides contact details for customer service and technical support, including phone numbers and a website for further information.

Catalog excerpts

Chemtrol® is a brand of ® Chemtrol Thermoplastic Flow Solutions Valve Guide ®

Open the catalog to page 1

Introduction to Chemtrol® Valves _L Ball Valves True Union Ball Valves—A Family of Products 2 PVC & CPVC Tru-Bloc® Model D Ball Valves 3 PVC & CPVC Tru-Bloc® Model C Ball Valves _4 PVC & CPVC Bleach Ball Valves _5 Polypropylene Tru-Bloc® Ball Valves _6 Kynar@ (PVDF) Tru-Bloc® Ball Valves 7 PVC & CPVC 3-Way Ball Valves _8 Installation and Maintenance Instructions—True Union Style Ball Valves _9_ PVC Compact Economy Ball Valves 10 Butterfly Valves PVC/CPVC Butterfly Valves; Model B 11 PVC Butterfly Valves; Model C 12 Installation and Maintenance Instructions—Butterfly Valves 13 Check, Vent, and...

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® ® Introduction Introduction to Chemtrol® Valves With more than 45 years of experience in industrial thermoplastics, Chemtrol® offers dependable products that work in the most demanding environments. The premium line of quality Chemtrol® valves are lightweight, weather-resistant, and maintenance-free–saving you time and money. For specific recommendations of chemical compatibility, see the Chemtrol Chemical Resistance Guide. For engineering data related to plastic piping system design, see the Chemtrol Thermoplastic Piping Technical Manual. And for the best thermoplastic fittings and flanges...

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® ® Product Guide—Ball Valves www.nibco.com www.nibco.com True Union Ball Valves — A Family of Products The True Union feature, an exclusive Chemtrol® introduction, so revolutionized the industrial plastic valve industry that it has become the standard followed by all major manufacturers. The purpose of the design is to permit the valve cartridge, i.e., the body containing all operational components, to be easily lifted from the piping system for servicing/replacement when the union nuts are backed off. Easy repair/replacement, interchangeability, distribution availability, technical service,...

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® Product Guide—Ball Valves www.nibco.com PVC and CPVC Tru-Bloc® Ball Valves, True Union Model D 1/2" through 2" Nominal Sizes 250 psi at 73°F water– non-shock– full port As a result of continuous testing and improvements since the inception of the True Union Ball Valve, three distinct model changes have occurred. The original True Union Model A design had a seat-carrier that slid into the smooth bore of the valve body, held in place by the external nut and end connector. Tightening the external nut adjusted the compression of the PTFE seat onto the ball. The first major evolution to the True...

Open the catalog to page 5

® Product Guide—Ball Valves www.nibco.com PVC and CPVC Tru-Bloc® Ball Valves, True Union Model C 3" through 6" Nominal Sizes 150 psi at 73°F water– non-shock– full port As a result of continuous testing and improvements since the inception of the True Union Ball Valve, three distinct model changes have occurred. The original True Union Model A design had a seat-carrier that slid into the smooth bore of the valve body, held in place by the external nut and end connector. Tightening the external nut adjusted the compression of the PTFE seat onto the ball. The first major evolution to the True Union...

Open the catalog to page 6

® Product Guide—Ball Valves www.nibco.com PVC and CPVC Bleach Ball Valves True Union Model C The Problem Sodium hypochlorite, used in water treatment, aquatic centers, and paper and textile applications, can become trapped in the body cavity of a closed ball valve and create failure conditions as the unstable chemical decomposes. The Chemtrol® Solution The Bleach Ball Valve is a special factory modification to a PVC or CPVC True Union Model C Ball Valve that effectively vents sodium hypochlorite out-gassing to the pressure port. In addition, the inner valve surfaces are kept constantly wetted...

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® Product Guide—Ball Valves www.nibco.com Polypropylene Tru-Bloc® Ball Valves True Union Black and Chem-Pure® (Natural) 150 psi at 73°F water–non-shock–full port • Distinctive red handle indicates “open/close” and direction of flow at a distance. And molded-in arrows on top of the handle dictate rotational direction to personnel for easy operation within 90° stops. For applications requiring handle removal, the D-ring stem flats indicate “open/close” and a molded-in arrow on top of the stem indicates flow direction. Notes See page 2 for a list of Components And Construction Materials. For more...

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® Product Guide—Ball Valves www.nibco.com Kynar® (PVDF) Tru-Bloc® Ball Valves True Union Red and Natural •Valves are manufactured and assembled without exposure to silicone compounds. •Distinctive black handle indicates “open/close” and direction of flow at a distance. And molded-in arrows on top of the handle dictate rotational direction to personnel for easy operation within 90° stops. For applications requiring handle removal, the D-ring stem flats indicate “open/close” and a molded-in arrow on top of the stem indicates flow direction. 150 psi at 73°F water–non-shock–full port Notes See page...

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® Product Guide—Ball Valves www.nibco.com • FLOW externally molded onto the body to indicate the fixed end containing a PTFE seat. Flow can be blocked at this port while adjacent piping is disconnected for repair or alteration. • ADJ externally molded onto the body to indicate the open end used for assembly. Adjustment of this union nut can compensate for wear of PTFE seats, with no production loss to remove valve for internal adjustment. •Valves are manufactured and assembled without exposure to silicone compounds. •Full port design produces minimum flow restriction with the lowest possible...

Open the catalog to page 10

® Product Guide—Ball Valves Installation and Maintenance Instructions True Union Style Ball Valves Tru-Bloc® – True Union Multiport – 3-Way/3-Position Diverter – 3-Way/2-Position Installation Chemtrol® Union-End Ball Valves can be fitted with socket, threaded, or flanged end connections. When joining union-end valves, or when flanging end connectors, never make the joint to the end connectors while they are attached to the valve body. Remove the union nuts and end connectors from the valve cartridge first. In order to prevent mishaps with the union nut, slide it (smallest bore first) over the...

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ChemVlvGuide

ChemVlvGuide

Catalog excerpts

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