FAQs

Find answers to our most frequently asked questions below.

Do all products come with a Pressure Equipment Directive (PED)?

No. Since the PED is for the European market not all manufacturers have undergone the expense of obtaining the PED certification.

Do all products come with CRN’s?

No. The CRN is manufacturer-specific, and not all manufacturers have gone through the expense of obtaining the CRN for their company.

Why do I need a Canadian Registration Number (CRN)?

A Canadian Registration Number (CRN) is required for each jurisdiction/province where PVF equipment is used. The CRN is manufacturer-specific, and each manufacturer will have to submit their designs for approval.

What is a Non-Approved product?

A Non-Approved product has not made the Approved Manufacturer List and may not be suitable for some application requisites.

What is an Approved product?

An Approved product refers to approval for use based on the product meets all necessary regulatory approvals and specifications. Generally applicable to domestic US projects, the Approved Manufacturer List (AML) provides details. 

What is a Butterfly Valve?

A Butterfly Valve is a quarter-turn valve used to control the flow of fluid through a piping system. There are three main types of Butterfly Valves: Concentric, Double Offset (AKA high performance), and Triple Offset. 

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What is a Pfetzer valve?

Also commonly referred to as a widget, the pfetzer valve is the layman’s term for all parts, bits, and bobs related to the creation and assembly of things.

What is a Piston Check Valve?

Also known as a lift check, a spring-loaded piston check is designed to allow the flow in one direction and prevent it from reversing and flowing in the reverse direction.

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What is a Duo Check Valve?

A duo check valve is a spring-loaded dual plate check valve that is designed to allow the flow in one direction and prevent it from reversing and flowing in the reverse direction.

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What is a Swing Check Valve?

A Swing Check Valve, also known as a tilting disc check, is designed to allow the flow in one direction and prevent it from reversing and flowing in the reverse direction. 

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What is a Globe Valve?

A Globe Valve is a multi-turn valve used to control the flow of fluid through a piping system and offers some throttling capabilities.

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