Spacer and shim assembly for fluid powered diaphragm pumps

An improved air operated diaphragm pump comprising an outer chamber which is connected to a manifold assembly, the manifold assembly comprising first and second fluid communicating parts, the improvement comprising:

• a combination spacer and shim assembly for attachment between the first and second fluid communicating parts of the manifold assembly, the combination spacer and shim assembly comprising
• an annular spacer plate comprising an outer periphery for attachment between the two parts of the pump assembly, the spacer plate further comprising a first side and a second side, the spacer plate being fabricated from an injection molded material,
• the first side of the spacer plate comprising a first annular recessed area at an inner periphery thereof for removably accommodating an first annular seal, the second side of the spacer plate comprising a second annular recessed area at an inner periphery thereof for removably accommodating a second annular seal,
• the first seal providing a seal between the annular spacer plate and the first fluid communicating part of the pump, the second seal providing a seal between the annular spacer plate and the second fluid communicating part of the pump,
• the first and second seals being fabricated from an elastomer material,
• the first seal removably engaging the annular spacer plate and the first fluid communicating part, the second seal removably engaging the annular spacer plate and the second fluid communicating part,
• the first seal further comprises at least one outwardly protruding lip, the lip of the first seal engaging the first fluid communicating part of the pump and providing a seal between the annular spacer plate and the first fluid communicating part of the pump.

An improved air operated diaphragm pump for pumping fluid comprising an outer chamber which is connected to a manifold assembly, the manifold assembly comprising first and second fluid communicating parts, the improvement comprising:

• a combination spacer and shim assembly for attachment between the first and second fluid communicating parts of the manifold assembly, the combination spacer and shim assembly comprising
• an annular spacer plate comprising an outer periphery for attachment between the two parts of the pump assembly, the spacer plate further comprising a first side and a second side, the annular spacer plate further comprising an inner periphery,
• the first side of the spacer plate comprising a first annular recessed area at an inner periphery thereof for removably accommodating an first annular seal, the second side of the spacer plate comprising a second annular recessed area at an inner periphery thereof for removably accommodating a second annular seal,
• the first annular seal comprising an inner periphery disposed radially inward of the inner periphery of the annular spacer plate, the second annular seal comprising an inner periphery disposed radially inward of the inner periphery of the annular spacer plate and in matching registry with the inner periphery of the first annular seal,
• the first seal providing a seal between the annular spacer plate and the first fluid communicating part of the pump, the second seal providing a seal between the annular spacer plate and the second fluid communicating part of the pump, the inner peripheries of the first and second seals sealing engaging each other and isolating the inner periphery of the annular spacer plate from the fluid being pumped.

A combination spacer and shim assembly for attachment between first and second fluid communicating parts of a pump, the assembly comprising:

• an annular spacer plate comprising an outer periphery for attachment between the two fluid communicating parts of the pump assembly, the spacer plate further comprising a first side and a second side, the spacer plate being fabricated from an injection molded material,
• the first side of the spacer plate comprising a first annular recessed area at an inner periphery thereof for removably accommodating a first annular seal, the second side of the spacer plate comprising a second annular recessed area at an inner periphery thereof for removably accommodating a second annular seal,
• the first seal providing a sealing engagement between the annular spacer plate and the first fluid communicating part of the pump, the second seal providing a sealing engagement between the annular spacer plate and the second fluid communicating part of the pump,
• the first and second seals being fabricated from an elastomer material,
• the first seal removably engaging the annular spacer plate and the first fluid communicating part, the second seal removably engaging the annular spacer plate and the second fluid communicating part,
• the engagement between the first seal and the first fluid communicating part and the engagement between the second seal and the second fluid communicating part prevents fluid being communicated through the first and second fluid communicating parts from coming in contact with the annular spacer plate.